go: Update fix for CVE-2023-24538 & CVE-2023-39318

Add missing files in fix for CVE-2023-24538 & CVE-2023-39318

Upstream Link -
CVE-2023-24538: b1e3ecfa06
CVE-2023-39318: 023b542edf

(From OE-Core rev: 0d8f7062d4fb5525f34427b1a7304f165bee0cfc)

Signed-off-by: Shubham Kulkarni <skulkarni@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Shubham Kulkarni
2023-09-30 00:50:33 +05:30
committed by Steve Sakoman
parent 25073f9c0e
commit 74b22a5e91
4 changed files with 802 additions and 17 deletions

View File

@@ -29,7 +29,8 @@ SRC_URI += "\
file://CVE-2022-41722.patch \
file://CVE-2023-24537.patch \
file://CVE-2023-24534.patch \
file://CVE-2023-24538.patch \
file://CVE-2023-24538_1.patch \
file://CVE-2023-24538_2.patch \
file://CVE-2023-24540.patch \
file://CVE-2023-24539.patch \
file://CVE-2023-29404.patch \

View File

@@ -0,0 +1,597 @@
From b1e4e8ec7e946ff2d3bb37ac99c5468ceb49c362 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Thu, 20 May 2021 12:46:33 -0400
Subject: [PATCH 1/2] html/template, text/template: implement break and
continue for range loops
Break and continue for range loops was accepted as a proposal in June 2017.
It was implemented in CL 66410 (Oct 2017)
but then rolled back in CL 92155 (Feb 2018)
because html/template changes had not been implemented.
This CL reimplements break and continue in text/template
and then adds support for them in html/template as well.
Fixes #20531.
Change-Id: I05330482a976f1c078b4b49c2287bd9031bb7616
Reviewed-on: https://go-review.googlesource.com/c/go/+/321491
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Upstream-Status: Backport from https://github.com/golang/go/commit/d0dd26a88c019d54f22463daae81e785f5867565
CVE: CVE-2023-24538
Signed-off-by: Shubham Kulkarni <skulkarni@mvista.com>
---
src/html/template/context.go | 4 ++
src/html/template/escape.go | 71 ++++++++++++++++++++++++++++++++++-
src/html/template/escape_test.go | 24 ++++++++++++
src/html/template/exec_test.go | 2 +
src/text/template/doc.go | 8 ++++
src/text/template/exec.go | 24 +++++++++++-
src/text/template/exec_test.go | 2 +
src/text/template/parse/lex.go | 13 ++++++-
src/text/template/parse/lex_test.go | 2 +
src/text/template/parse/node.go | 36 ++++++++++++++++++
src/text/template/parse/parse.go | 42 ++++++++++++++++++++-
src/text/template/parse/parse_test.go | 8 ++++
12 files changed, 232 insertions(+), 4 deletions(-)
diff --git a/src/html/template/context.go b/src/html/template/context.go
index f7d4849..aaa7d08 100644
--- a/src/html/template/context.go
+++ b/src/html/template/context.go
@@ -6,6 +6,7 @@ package template
import (
"fmt"
+ "text/template/parse"
)
// context describes the state an HTML parser must be in when it reaches the
@@ -22,6 +23,7 @@ type context struct {
jsCtx jsCtx
attr attr
element element
+ n parse.Node // for range break/continue
err *Error
}
@@ -141,6 +143,8 @@ const (
// stateError is an infectious error state outside any valid
// HTML/CSS/JS construct.
stateError
+ // stateDead marks unreachable code after a {{break}} or {{continue}}.
+ stateDead
)
// isComment is true for any state that contains content meant for template
diff --git a/src/html/template/escape.go b/src/html/template/escape.go
index 8739735..6dea79c 100644
--- a/src/html/template/escape.go
+++ b/src/html/template/escape.go
@@ -97,6 +97,15 @@ type escaper struct {
actionNodeEdits map[*parse.ActionNode][]string
templateNodeEdits map[*parse.TemplateNode]string
textNodeEdits map[*parse.TextNode][]byte
+ // rangeContext holds context about the current range loop.
+ rangeContext *rangeContext
+}
+
+// rangeContext holds information about the current range loop.
+type rangeContext struct {
+ outer *rangeContext // outer loop
+ breaks []context // context at each break action
+ continues []context // context at each continue action
}
// makeEscaper creates a blank escaper for the given set.
@@ -109,6 +118,7 @@ func makeEscaper(n *nameSpace) escaper {
map[*parse.ActionNode][]string{},
map[*parse.TemplateNode]string{},
map[*parse.TextNode][]byte{},
+ nil,
}
}
@@ -124,8 +134,16 @@ func (e *escaper) escape(c context, n parse.Node) context {
switch n := n.(type) {
case *parse.ActionNode:
return e.escapeAction(c, n)
+ case *parse.BreakNode:
+ c.n = n
+ e.rangeContext.breaks = append(e.rangeContext.breaks, c)
+ return context{state: stateDead}
case *parse.CommentNode:
return c
+ case *parse.ContinueNode:
+ c.n = n
+ e.rangeContext.continues = append(e.rangeContext.breaks, c)
+ return context{state: stateDead}
case *parse.IfNode:
return e.escapeBranch(c, &n.BranchNode, "if")
case *parse.ListNode:
@@ -427,6 +445,12 @@ func join(a, b context, node parse.Node, nodeName string) context {
if b.state == stateError {
return b
}
+ if a.state == stateDead {
+ return b
+ }
+ if b.state == stateDead {
+ return a
+ }
if a.eq(b) {
return a
}
@@ -466,14 +490,27 @@ func join(a, b context, node parse.Node, nodeName string) context {
// escapeBranch escapes a branch template node: "if", "range" and "with".
func (e *escaper) escapeBranch(c context, n *parse.BranchNode, nodeName string) context {
+ if nodeName == "range" {
+ e.rangeContext = &rangeContext{outer: e.rangeContext}
+ }
c0 := e.escapeList(c, n.List)
- if nodeName == "range" && c0.state != stateError {
+ if nodeName == "range" {
+ if c0.state != stateError {
+ c0 = joinRange(c0, e.rangeContext)
+ }
+ e.rangeContext = e.rangeContext.outer
+ if c0.state == stateError {
+ return c0
+ }
+
// The "true" branch of a "range" node can execute multiple times.
// We check that executing n.List once results in the same context
// as executing n.List twice.
+ e.rangeContext = &rangeContext{outer: e.rangeContext}
c1, _ := e.escapeListConditionally(c0, n.List, nil)
c0 = join(c0, c1, n, nodeName)
if c0.state == stateError {
+ e.rangeContext = e.rangeContext.outer
// Make clear that this is a problem on loop re-entry
// since developers tend to overlook that branch when
// debugging templates.
@@ -481,11 +518,39 @@ func (e *escaper) escapeBranch(c context, n *parse.BranchNode, nodeName string)
c0.err.Description = "on range loop re-entry: " + c0.err.Description
return c0
}
+ c0 = joinRange(c0, e.rangeContext)
+ e.rangeContext = e.rangeContext.outer
+ if c0.state == stateError {
+ return c0
+ }
}
c1 := e.escapeList(c, n.ElseList)
return join(c0, c1, n, nodeName)
}
+func joinRange(c0 context, rc *rangeContext) context {
+ // Merge contexts at break and continue statements into overall body context.
+ // In theory we could treat breaks differently from continues, but for now it is
+ // enough to treat them both as going back to the start of the loop (which may then stop).
+ for _, c := range rc.breaks {
+ c0 = join(c0, c, c.n, "range")
+ if c0.state == stateError {
+ c0.err.Line = c.n.(*parse.BreakNode).Line
+ c0.err.Description = "at range loop break: " + c0.err.Description
+ return c0
+ }
+ }
+ for _, c := range rc.continues {
+ c0 = join(c0, c, c.n, "range")
+ if c0.state == stateError {
+ c0.err.Line = c.n.(*parse.ContinueNode).Line
+ c0.err.Description = "at range loop continue: " + c0.err.Description
+ return c0
+ }
+ }
+ return c0
+}
+
// escapeList escapes a list template node.
func (e *escaper) escapeList(c context, n *parse.ListNode) context {
if n == nil {
@@ -493,6 +558,9 @@ func (e *escaper) escapeList(c context, n *parse.ListNode) context {
}
for _, m := range n.Nodes {
c = e.escape(c, m)
+ if c.state == stateDead {
+ break
+ }
}
return c
}
@@ -503,6 +571,7 @@ func (e *escaper) escapeList(c context, n *parse.ListNode) context {
// which is the same as whether e was updated.
func (e *escaper) escapeListConditionally(c context, n *parse.ListNode, filter func(*escaper, context) bool) (context, bool) {
e1 := makeEscaper(e.ns)
+ e1.rangeContext = e.rangeContext
// Make type inferences available to f.
for k, v := range e.output {
e1.output[k] = v
diff --git a/src/html/template/escape_test.go b/src/html/template/escape_test.go
index fbc84a7..3b0aa8c 100644
--- a/src/html/template/escape_test.go
+++ b/src/html/template/escape_test.go
@@ -920,6 +920,22 @@ func TestErrors(t *testing.T) {
"<a href='/foo?{{range .Items}}&{{.K}}={{.V}}{{end}}'>",
"",
},
+ {
+ "{{range .Items}}<a{{if .X}}{{end}}>{{end}}",
+ "",
+ },
+ {
+ "{{range .Items}}<a{{if .X}}{{end}}>{{continue}}{{end}}",
+ "",
+ },
+ {
+ "{{range .Items}}<a{{if .X}}{{end}}>{{break}}{{end}}",
+ "",
+ },
+ {
+ "{{range .Items}}<a{{if .X}}{{end}}>{{if .X}}{{break}}{{end}}{{end}}",
+ "",
+ },
// Error cases.
{
"{{if .Cond}}<a{{end}}",
@@ -956,6 +972,14 @@ func TestErrors(t *testing.T) {
"z:2:8: on range loop re-entry: {{range}} branches",
},
{
+ "{{range .Items}}<a{{if .X}}{{break}}{{end}}>{{end}}",
+ "z:1:29: at range loop break: {{range}} branches end in different contexts",
+ },
+ {
+ "{{range .Items}}<a{{if .X}}{{continue}}{{end}}>{{end}}",
+ "z:1:29: at range loop continue: {{range}} branches end in different contexts",
+ },
+ {
"<a b=1 c={{.H}}",
"z: ends in a non-text context: {stateAttr delimSpaceOrTagEnd",
},
diff --git a/src/html/template/exec_test.go b/src/html/template/exec_test.go
index 8885873..523340b 100644
--- a/src/html/template/exec_test.go
+++ b/src/html/template/exec_test.go
@@ -567,6 +567,8 @@ var execTests = []execTest{
{"range empty no else", "{{range .SIEmpty}}-{{.}}-{{end}}", "", tVal, true},
{"range []int else", "{{range .SI}}-{{.}}-{{else}}EMPTY{{end}}", "-3--4--5-", tVal, true},
{"range empty else", "{{range .SIEmpty}}-{{.}}-{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
+ {"range []int break else", "{{range .SI}}-{{.}}-{{break}}NOTREACHED{{else}}EMPTY{{end}}", "-3-", tVal, true},
+ {"range []int continue else", "{{range .SI}}-{{.}}-{{continue}}NOTREACHED{{else}}EMPTY{{end}}", "-3--4--5-", tVal, true},
{"range []bool", "{{range .SB}}-{{.}}-{{end}}", "-true--false-", tVal, true},
{"range []int method", "{{range .SI | .MAdd .I}}-{{.}}-{{end}}", "-20--21--22-", tVal, true},
{"range map", "{{range .MSI}}-{{.}}-{{end}}", "-1--3--2-", tVal, true},
diff --git a/src/text/template/doc.go b/src/text/template/doc.go
index 7b30294..0228b15 100644
--- a/src/text/template/doc.go
+++ b/src/text/template/doc.go
@@ -112,6 +112,14 @@ data, defined in detail in the corresponding sections that follow.
T0 is executed; otherwise, dot is set to the successive elements
of the array, slice, or map and T1 is executed.
+ {{break}}
+ The innermost {{range pipeline}} loop is ended early, stopping the
+ current iteration and bypassing all remaining iterations.
+
+ {{continue}}
+ The current iteration of the innermost {{range pipeline}} loop is
+ stopped, and the loop starts the next iteration.
+
{{template "name"}}
The template with the specified name is executed with nil data.
diff --git a/src/text/template/exec.go b/src/text/template/exec.go
index 5ad3b4e..92fa9d9 100644
--- a/src/text/template/exec.go
+++ b/src/text/template/exec.go
@@ -5,6 +5,7 @@
package template
import (
+ "errors"
"fmt"
"internal/fmtsort"
"io"
@@ -243,6 +244,12 @@ func (t *Template) DefinedTemplates() string {
return b.String()
}
+// Sentinel errors for use with panic to signal early exits from range loops.
+var (
+ walkBreak = errors.New("break")
+ walkContinue = errors.New("continue")
+)
+
// Walk functions step through the major pieces of the template structure,
// generating output as they go.
func (s *state) walk(dot reflect.Value, node parse.Node) {
@@ -255,7 +262,11 @@ func (s *state) walk(dot reflect.Value, node parse.Node) {
if len(node.Pipe.Decl) == 0 {
s.printValue(node, val)
}
+ case *parse.BreakNode:
+ panic(walkBreak)
case *parse.CommentNode:
+ case *parse.ContinueNode:
+ panic(walkContinue)
case *parse.IfNode:
s.walkIfOrWith(parse.NodeIf, dot, node.Pipe, node.List, node.ElseList)
case *parse.ListNode:
@@ -334,6 +345,11 @@ func isTrue(val reflect.Value) (truth, ok bool) {
func (s *state) walkRange(dot reflect.Value, r *parse.RangeNode) {
s.at(r)
+ defer func() {
+ if r := recover(); r != nil && r != walkBreak {
+ panic(r)
+ }
+ }()
defer s.pop(s.mark())
val, _ := indirect(s.evalPipeline(dot, r.Pipe))
// mark top of stack before any variables in the body are pushed.
@@ -347,8 +363,14 @@ func (s *state) walkRange(dot reflect.Value, r *parse.RangeNode) {
if len(r.Pipe.Decl) > 1 {
s.setTopVar(2, index)
}
+ defer s.pop(mark)
+ defer func() {
+ // Consume panic(walkContinue)
+ if r := recover(); r != nil && r != walkContinue {
+ panic(r)
+ }
+ }()
s.walk(elem, r.List)
- s.pop(mark)
}
switch val.Kind() {
case reflect.Array, reflect.Slice:
diff --git a/src/text/template/exec_test.go b/src/text/template/exec_test.go
index ef52164..586af55 100644
--- a/src/text/template/exec_test.go
+++ b/src/text/template/exec_test.go
@@ -564,6 +564,8 @@ var execTests = []execTest{
{"range empty no else", "{{range .SIEmpty}}-{{.}}-{{end}}", "", tVal, true},
{"range []int else", "{{range .SI}}-{{.}}-{{else}}EMPTY{{end}}", "-3--4--5-", tVal, true},
{"range empty else", "{{range .SIEmpty}}-{{.}}-{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
+ {"range []int break else", "{{range .SI}}-{{.}}-{{break}}NOTREACHED{{else}}EMPTY{{end}}", "-3-", tVal, true},
+ {"range []int continue else", "{{range .SI}}-{{.}}-{{continue}}NOTREACHED{{else}}EMPTY{{end}}", "-3--4--5-", tVal, true},
{"range []bool", "{{range .SB}}-{{.}}-{{end}}", "-true--false-", tVal, true},
{"range []int method", "{{range .SI | .MAdd .I}}-{{.}}-{{end}}", "-20--21--22-", tVal, true},
{"range map", "{{range .MSI}}-{{.}}-{{end}}", "-1--3--2-", tVal, true},
diff --git a/src/text/template/parse/lex.go b/src/text/template/parse/lex.go
index 6784071..95e3377 100644
--- a/src/text/template/parse/lex.go
+++ b/src/text/template/parse/lex.go
@@ -62,6 +62,8 @@ const (
// Keywords appear after all the rest.
itemKeyword // used only to delimit the keywords
itemBlock // block keyword
+ itemBreak // break keyword
+ itemContinue // continue keyword
itemDot // the cursor, spelled '.'
itemDefine // define keyword
itemElse // else keyword
@@ -76,6 +78,8 @@ const (
var key = map[string]itemType{
".": itemDot,
"block": itemBlock,
+ "break": itemBreak,
+ "continue": itemContinue,
"define": itemDefine,
"else": itemElse,
"end": itemEnd,
@@ -119,6 +123,8 @@ type lexer struct {
parenDepth int // nesting depth of ( ) exprs
line int // 1+number of newlines seen
startLine int // start line of this item
+ breakOK bool // break keyword allowed
+ continueOK bool // continue keyword allowed
}
// next returns the next rune in the input.
@@ -461,7 +467,12 @@ Loop:
}
switch {
case key[word] > itemKeyword:
- l.emit(key[word])
+ item := key[word]
+ if item == itemBreak && !l.breakOK || item == itemContinue && !l.continueOK {
+ l.emit(itemIdentifier)
+ } else {
+ l.emit(item)
+ }
case word[0] == '.':
l.emit(itemField)
case word == "true", word == "false":
diff --git a/src/text/template/parse/lex_test.go b/src/text/template/parse/lex_test.go
index 6510eed..df6aabf 100644
--- a/src/text/template/parse/lex_test.go
+++ b/src/text/template/parse/lex_test.go
@@ -35,6 +35,8 @@ var itemName = map[itemType]string{
// keywords
itemDot: ".",
itemBlock: "block",
+ itemBreak: "break",
+ itemContinue: "continue",
itemDefine: "define",
itemElse: "else",
itemIf: "if",
diff --git a/src/text/template/parse/node.go b/src/text/template/parse/node.go
index 177482f..4726822 100644
--- a/src/text/template/parse/node.go
+++ b/src/text/template/parse/node.go
@@ -71,6 +71,8 @@ const (
NodeVariable // A $ variable.
NodeWith // A with action.
NodeComment // A comment.
+ NodeBreak // A break action.
+ NodeContinue // A continue action.
)
// Nodes.
@@ -907,6 +909,40 @@ func (i *IfNode) Copy() Node {
return i.tr.newIf(i.Pos, i.Line, i.Pipe.CopyPipe(), i.List.CopyList(), i.ElseList.CopyList())
}
+// BreakNode represents a {{break}} action.
+type BreakNode struct {
+ tr *Tree
+ NodeType
+ Pos
+ Line int
+}
+
+func (t *Tree) newBreak(pos Pos, line int) *BreakNode {
+ return &BreakNode{tr: t, NodeType: NodeBreak, Pos: pos, Line: line}
+}
+
+func (b *BreakNode) Copy() Node { return b.tr.newBreak(b.Pos, b.Line) }
+func (b *BreakNode) String() string { return "{{break}}" }
+func (b *BreakNode) tree() *Tree { return b.tr }
+func (b *BreakNode) writeTo(sb *strings.Builder) { sb.WriteString("{{break}}") }
+
+// ContinueNode represents a {{continue}} action.
+type ContinueNode struct {
+ tr *Tree
+ NodeType
+ Pos
+ Line int
+}
+
+func (t *Tree) newContinue(pos Pos, line int) *ContinueNode {
+ return &ContinueNode{tr: t, NodeType: NodeContinue, Pos: pos, Line: line}
+}
+
+func (c *ContinueNode) Copy() Node { return c.tr.newContinue(c.Pos, c.Line) }
+func (c *ContinueNode) String() string { return "{{continue}}" }
+func (c *ContinueNode) tree() *Tree { return c.tr }
+func (c *ContinueNode) writeTo(sb *strings.Builder) { sb.WriteString("{{continue}}") }
+
// RangeNode represents a {{range}} action and its commands.
type RangeNode struct {
BranchNode
diff --git a/src/text/template/parse/parse.go b/src/text/template/parse/parse.go
index 1a63961..d92bed5 100644
--- a/src/text/template/parse/parse.go
+++ b/src/text/template/parse/parse.go
@@ -31,6 +31,7 @@ type Tree struct {
vars []string // variables defined at the moment.
treeSet map[string]*Tree
actionLine int // line of left delim starting action
+ rangeDepth int
mode Mode
}
@@ -224,6 +225,8 @@ func (t *Tree) startParse(funcs []map[string]interface{}, lex *lexer, treeSet ma
t.vars = []string{"$"}
t.funcs = funcs
t.treeSet = treeSet
+ lex.breakOK = !t.hasFunction("break")
+ lex.continueOK = !t.hasFunction("continue")
}
// stopParse terminates parsing.
@@ -386,6 +389,10 @@ func (t *Tree) action() (n Node) {
switch token := t.nextNonSpace(); token.typ {
case itemBlock:
return t.blockControl()
+ case itemBreak:
+ return t.breakControl(token.pos, token.line)
+ case itemContinue:
+ return t.continueControl(token.pos, token.line)
case itemElse:
return t.elseControl()
case itemEnd:
@@ -405,6 +412,32 @@ func (t *Tree) action() (n Node) {
return t.newAction(token.pos, token.line, t.pipeline("command", itemRightDelim))
}
+// Break:
+// {{break}}
+// Break keyword is past.
+func (t *Tree) breakControl(pos Pos, line int) Node {
+ if token := t.next(); token.typ != itemRightDelim {
+ t.unexpected(token, "in {{break}}")
+ }
+ if t.rangeDepth == 0 {
+ t.errorf("{{break}} outside {{range}}")
+ }
+ return t.newBreak(pos, line)
+}
+
+// Continue:
+// {{continue}}
+// Continue keyword is past.
+func (t *Tree) continueControl(pos Pos, line int) Node {
+ if token := t.next(); token.typ != itemRightDelim {
+ t.unexpected(token, "in {{continue}}")
+ }
+ if t.rangeDepth == 0 {
+ t.errorf("{{continue}} outside {{range}}")
+ }
+ return t.newContinue(pos, line)
+}
+
// Pipeline:
// declarations? command ('|' command)*
func (t *Tree) pipeline(context string, end itemType) (pipe *PipeNode) {
@@ -480,8 +513,14 @@ func (t *Tree) checkPipeline(pipe *PipeNode, context string) {
func (t *Tree) parseControl(allowElseIf bool, context string) (pos Pos, line int, pipe *PipeNode, list, elseList *ListNode) {
defer t.popVars(len(t.vars))
pipe = t.pipeline(context, itemRightDelim)
+ if context == "range" {
+ t.rangeDepth++
+ }
var next Node
list, next = t.itemList()
+ if context == "range" {
+ t.rangeDepth--
+ }
switch next.Type() {
case nodeEnd: //done
case nodeElse:
@@ -523,7 +562,8 @@ func (t *Tree) ifControl() Node {
// {{range pipeline}} itemList {{else}} itemList {{end}}
// Range keyword is past.
func (t *Tree) rangeControl() Node {
- return t.newRange(t.parseControl(false, "range"))
+ r := t.newRange(t.parseControl(false, "range"))
+ return r
}
// With:
diff --git a/src/text/template/parse/parse_test.go b/src/text/template/parse/parse_test.go
index 9b1be27..c3679a0 100644
--- a/src/text/template/parse/parse_test.go
+++ b/src/text/template/parse/parse_test.go
@@ -230,6 +230,10 @@ var parseTests = []parseTest{
`{{range $x := .SI}}{{.}}{{end}}`},
{"range 2 vars", "{{range $x, $y := .SI}}{{.}}{{end}}", noError,
`{{range $x, $y := .SI}}{{.}}{{end}}`},
+ {"range with break", "{{range .SI}}{{.}}{{break}}{{end}}", noError,
+ `{{range .SI}}{{.}}{{break}}{{end}}`},
+ {"range with continue", "{{range .SI}}{{.}}{{continue}}{{end}}", noError,
+ `{{range .SI}}{{.}}{{continue}}{{end}}`},
{"constants", "{{range .SI 1 -3.2i true false 'a' nil}}{{end}}", noError,
`{{range .SI 1 -3.2i true false 'a' nil}}{{end}}`},
{"template", "{{template `x`}}", noError,
@@ -279,6 +283,10 @@ var parseTests = []parseTest{
{"adjacent args", "{{printf 3`x`}}", hasError, ""},
{"adjacent args with .", "{{printf `x`.}}", hasError, ""},
{"extra end after if", "{{if .X}}a{{else if .Y}}b{{end}}{{end}}", hasError, ""},
+ {"break outside range", "{{range .}}{{end}} {{break}}", hasError, ""},
+ {"continue outside range", "{{range .}}{{end}} {{continue}}", hasError, ""},
+ {"break in range else", "{{range .}}{{else}}{{break}}{{end}}", hasError, ""},
+ {"continue in range else", "{{range .}}{{else}}{{continue}}{{end}}", hasError, ""},
// Other kinds of assignments and operators aren't available yet.
{"bug0a", "{{$x := 0}}{{$x}}", noError, "{{$x := 0}}{{$x}}"},
{"bug0b", "{{$x += 1}}{{$x}}", hasError, ""},
--
2.7.4

View File

@@ -1,7 +1,7 @@
From 07cc3b8711a8efbb5885f56dd90d854049ad2f7d Mon Sep 17 00:00:00 2001
From: Roland Shoemaker <bracewell@google.com>
Date: Mon, 20 Mar 2023 11:01:13 -0700
Subject: [PATCH] html/template: disallow actions in JS template literals
Subject: [PATCH 2/2] html/template: disallow actions in JS template literals
ECMAScript 6 introduced template literals[0][1] which are delimited with
backticks. These need to be escaped in a similar fashion to the
@@ -52,12 +52,15 @@ CVE: CVE-2023-24538
Signed-off-by: Shubham Kulkarni <skulkarni@mvista.com>
---
src/html/template/context.go | 2 ++
src/html/template/error.go | 13 +++++++++++++
src/html/template/escape.go | 11 +++++++++++
src/html/template/error.go | 13 ++++++++
src/html/template/escape.go | 11 +++++++
src/html/template/escape_test.go | 66 ++++++++++++++++++++++-----------------
src/html/template/js.go | 2 ++
src/html/template/jsctx_string.go | 9 +++++++++
src/html/template/transition.go | 7 ++++++-
6 files changed, 43 insertions(+), 1 deletion(-)
src/html/template/js_test.go | 2 +-
src/html/template/jsctx_string.go | 9 ++++++
src/html/template/state_string.go | 37 ++++++++++++++++++++--
src/html/template/transition.go | 7 ++++-
9 files changed, 116 insertions(+), 33 deletions(-)
diff --git a/src/html/template/context.go b/src/html/template/context.go
index f7d4849..0b65313 100644
@@ -125,6 +128,104 @@ index 8739735..ca078f4 100644
case stateJSRegexp:
s = append(s, "_html_template_jsregexpescaper")
case stateCSS:
diff --git a/src/html/template/escape_test.go b/src/html/template/escape_test.go
index 3b0aa8c..a695b17 100644
--- a/src/html/template/escape_test.go
+++ b/src/html/template/escape_test.go
@@ -681,35 +681,31 @@ func TestEscape(t *testing.T) {
}
for _, test := range tests {
- tmpl := New(test.name)
- tmpl = Must(tmpl.Parse(test.input))
- // Check for bug 6459: Tree field was not set in Parse.
- if tmpl.Tree != tmpl.text.Tree {
- t.Errorf("%s: tree not set properly", test.name)
- continue
- }
- b := new(bytes.Buffer)
- if err := tmpl.Execute(b, data); err != nil {
- t.Errorf("%s: template execution failed: %s", test.name, err)
- continue
- }
- if w, g := test.output, b.String(); w != g {
- t.Errorf("%s: escaped output: want\n\t%q\ngot\n\t%q", test.name, w, g)
- continue
- }
- b.Reset()
- if err := tmpl.Execute(b, pdata); err != nil {
- t.Errorf("%s: template execution failed for pointer: %s", test.name, err)
- continue
- }
- if w, g := test.output, b.String(); w != g {
- t.Errorf("%s: escaped output for pointer: want\n\t%q\ngot\n\t%q", test.name, w, g)
- continue
- }
- if tmpl.Tree != tmpl.text.Tree {
- t.Errorf("%s: tree mismatch", test.name)
- continue
- }
+ t.Run(test.name, func(t *testing.T) {
+ tmpl := New(test.name)
+ tmpl = Must(tmpl.Parse(test.input))
+ // Check for bug 6459: Tree field was not set in Parse.
+ if tmpl.Tree != tmpl.text.Tree {
+ t.Fatalf("%s: tree not set properly", test.name)
+ }
+ b := new(strings.Builder)
+ if err := tmpl.Execute(b, data); err != nil {
+ t.Fatalf("%s: template execution failed: %s", test.name, err)
+ }
+ if w, g := test.output, b.String(); w != g {
+ t.Fatalf("%s: escaped output: want\n\t%q\ngot\n\t%q", test.name, w, g)
+ }
+ b.Reset()
+ if err := tmpl.Execute(b, pdata); err != nil {
+ t.Fatalf("%s: template execution failed for pointer: %s", test.name, err)
+ }
+ if w, g := test.output, b.String(); w != g {
+ t.Fatalf("%s: escaped output for pointer: want\n\t%q\ngot\n\t%q", test.name, w, g)
+ }
+ if tmpl.Tree != tmpl.text.Tree {
+ t.Fatalf("%s: tree mismatch", test.name)
+ }
+ })
}
}
@@ -936,6 +932,10 @@ func TestErrors(t *testing.T) {
"{{range .Items}}<a{{if .X}}{{end}}>{{if .X}}{{break}}{{end}}{{end}}",
"",
},
+ {
+ "<script>var a = `${a+b}`</script>`",
+ "",
+ },
// Error cases.
{
"{{if .Cond}}<a{{end}}",
@@ -1082,6 +1082,10 @@ func TestErrors(t *testing.T) {
// html is allowed since it is the last command in the pipeline, but urlquery is not.
`predefined escaper "urlquery" disallowed in template`,
},
+ {
+ "<script>var tmpl = `asd {{.}}`;</script>",
+ `{{.}} appears in a JS template literal`,
+ },
}
for _, test := range tests {
buf := new(bytes.Buffer)
@@ -1304,6 +1308,10 @@ func TestEscapeText(t *testing.T) {
context{state: stateJSSqStr, delim: delimDoubleQuote, attr: attrScript},
},
{
+ "<a onclick=\"`foo",
+ context{state: stateJSBqStr, delim: delimDoubleQuote, attr: attrScript},
+ },
+ {
`<A ONCLICK="'`,
context{state: stateJSSqStr, delim: delimDoubleQuote, attr: attrScript},
},
diff --git a/src/html/template/js.go b/src/html/template/js.go
index ea9c183..b888eaf 100644
--- a/src/html/template/js.go
@@ -145,6 +246,19 @@ index ea9c183..b888eaf 100644
'+': `\u002b`,
'/': `\/`,
'<': `\u003c`,
diff --git a/src/html/template/js_test.go b/src/html/template/js_test.go
index d7ee47b..7d963ae 100644
--- a/src/html/template/js_test.go
+++ b/src/html/template/js_test.go
@@ -292,7 +292,7 @@ func TestEscapersOnLower7AndSelectHighCodepoints(t *testing.T) {
`0123456789:;\u003c=\u003e?` +
`@ABCDEFGHIJKLMNO` +
`PQRSTUVWXYZ[\\]^_` +
- "`abcdefghijklmno" +
+ "\\u0060abcdefghijklmno" +
"pqrstuvwxyz{|}~\u007f" +
"\u00A0\u0100\\u2028\\u2029\ufeff\U0001D11E",
},
diff --git a/src/html/template/jsctx_string.go b/src/html/template/jsctx_string.go
index dd1d87e..2394893 100644
--- a/src/html/template/jsctx_string.go
@@ -165,6 +279,55 @@ index dd1d87e..2394893 100644
const _jsCtx_name = "jsCtxRegexpjsCtxDivOpjsCtxUnknown"
var _jsCtx_index = [...]uint8{0, 11, 21, 33}
diff --git a/src/html/template/state_string.go b/src/html/template/state_string.go
index 05104be..6fb1a6e 100644
--- a/src/html/template/state_string.go
+++ b/src/html/template/state_string.go
@@ -4,9 +4,42 @@ package template
import "strconv"
-const _state_name = "stateTextstateTagstateAttrNamestateAfterNamestateBeforeValuestateHTMLCmtstateRCDATAstateAttrstateURLstateSrcsetstateJSstateJSDqStrstateJSSqStrstateJSRegexpstateJSBlockCmtstateJSLineCmtstateCSSstateCSSDqStrstateCSSSqStrstateCSSDqURLstateCSSSqURLstateCSSURLstateCSSBlockCmtstateCSSLineCmtstateError"
+func _() {
+ // An "invalid array index" compiler error signifies that the constant values have changed.
+ // Re-run the stringer command to generate them again.
+ var x [1]struct{}
+ _ = x[stateText-0]
+ _ = x[stateTag-1]
+ _ = x[stateAttrName-2]
+ _ = x[stateAfterName-3]
+ _ = x[stateBeforeValue-4]
+ _ = x[stateHTMLCmt-5]
+ _ = x[stateRCDATA-6]
+ _ = x[stateAttr-7]
+ _ = x[stateURL-8]
+ _ = x[stateSrcset-9]
+ _ = x[stateJS-10]
+ _ = x[stateJSDqStr-11]
+ _ = x[stateJSSqStr-12]
+ _ = x[stateJSBqStr-13]
+ _ = x[stateJSRegexp-14]
+ _ = x[stateJSBlockCmt-15]
+ _ = x[stateJSLineCmt-16]
+ _ = x[stateCSS-17]
+ _ = x[stateCSSDqStr-18]
+ _ = x[stateCSSSqStr-19]
+ _ = x[stateCSSDqURL-20]
+ _ = x[stateCSSSqURL-21]
+ _ = x[stateCSSURL-22]
+ _ = x[stateCSSBlockCmt-23]
+ _ = x[stateCSSLineCmt-24]
+ _ = x[stateError-25]
+ _ = x[stateDead-26]
+}
+
+const _state_name = "stateTextstateTagstateAttrNamestateAfterNamestateBeforeValuestateHTMLCmtstateRCDATAstateAttrstateURLstateSrcsetstateJSstateJSDqStrstateJSSqStrstateJSBqStrstateJSRegexpstateJSBlockCmtstateJSLineCmtstateCSSstateCSSDqStrstateCSSSqStrstateCSSDqURLstateCSSSqURLstateCSSURLstateCSSBlockCmtstateCSSLineCmtstateErrorstateDead"
-var _state_index = [...]uint16{0, 9, 17, 30, 44, 60, 72, 83, 92, 100, 111, 118, 130, 142, 155, 170, 184, 192, 205, 218, 231, 244, 255, 271, 286, 296}
+var _state_index = [...]uint16{0, 9, 17, 30, 44, 60, 72, 83, 92, 100, 111, 118, 130, 142, 154, 167, 182, 196, 204, 217, 230, 243, 256, 267, 283, 298, 308, 317}
func (i state) String() string {
if i >= state(len(_state_index)-1) {
diff --git a/src/html/template/transition.go b/src/html/template/transition.go
index 06df679..92eb351 100644
--- a/src/html/template/transition.go

View File

@@ -32,11 +32,11 @@ CVE: CVE-2023-39318
Signed-off-by: Siddharth Doshi <sdoshi@mvista.com>
---
src/html/template/context.go | 6 ++-
src/html/template/escape.go | 5 +-
src/html/template/escape_test.go | 10 ++++
src/html/template/state_string.go | 4 +-
src/html/template/transition.go | 80 ++++++++++++++++++++-----------
5 files changed, 72 insertions(+), 33 deletions(-)
src/html/template/escape.go | 5 ++-
src/html/template/escape_test.go | 10 +++++
src/html/template/state_string.go | 26 +++++++------
src/html/template/transition.go | 80 +++++++++++++++++++++++++--------------
5 files changed, 84 insertions(+), 43 deletions(-)
diff --git a/src/html/template/context.go b/src/html/template/context.go
index f5f44a1..feb6517 100644
@@ -105,14 +105,38 @@ diff --git a/src/html/template/state_string.go b/src/html/template/state_string.
index 05104be..b5cfe70 100644
--- a/src/html/template/state_string.go
+++ b/src/html/template/state_string.go
@@ -4,9 +4,9 @@ package template
@@ -25,21 +25,23 @@ func _() {
_ = x[stateJSRegexp-14]
_ = x[stateJSBlockCmt-15]
_ = x[stateJSLineCmt-16]
- _ = x[stateCSS-17]
- _ = x[stateCSSDqStr-18]
- _ = x[stateCSSSqStr-19]
- _ = x[stateCSSDqURL-20]
- _ = x[stateCSSSqURL-21]
- _ = x[stateCSSURL-22]
- _ = x[stateCSSBlockCmt-23]
- _ = x[stateCSSLineCmt-24]
- _ = x[stateError-25]
- _ = x[stateDead-26]
+ _ = x[stateJSHTMLOpenCmt-17]
+ _ = x[stateJSHTMLCloseCmt-18]
+ _ = x[stateCSS-19]
+ _ = x[stateCSSDqStr-20]
+ _ = x[stateCSSSqStr-21]
+ _ = x[stateCSSDqURL-22]
+ _ = x[stateCSSSqURL-23]
+ _ = x[stateCSSURL-24]
+ _ = x[stateCSSBlockCmt-25]
+ _ = x[stateCSSLineCmt-26]
+ _ = x[stateError-27]
+ _ = x[stateDead-28]
}
import "strconv"
-const _state_name = "stateTextstateTagstateAttrNamestateAfterNamestateBeforeValuestateHTMLCmtstateRCDATAstateAttrstateURLstateSrcsetstateJSstateJSDqStrstateJSSqStrstateJSRegexpstateJSBlockCmtstateJSLineCmtstateCSSstateCSSDqStrstateCSSSqStrstateCSSDqURLstateCSSSqURLstateCSSURLstateCSSBlockCmtstateCSSLineCmtstateError"
-const _state_name = "stateTextstateTagstateAttrNamestateAfterNamestateBeforeValuestateHTMLCmtstateRCDATAstateAttrstateURLstateSrcsetstateJSstateJSDqStrstateJSSqStrstateJSBqStrstateJSRegexpstateJSBlockCmtstateJSLineCmtstateCSSstateCSSDqStrstateCSSSqStrstateCSSDqURLstateCSSSqURLstateCSSURLstateCSSBlockCmtstateCSSLineCmtstateErrorstateDead"
+const _state_name = "stateTextstateTagstateAttrNamestateAfterNamestateBeforeValuestateHTMLCmtstateRCDATAstateAttrstateURLstateSrcsetstateJSstateJSDqStrstateJSSqStrstateJSBqStrstateJSRegexpstateJSBlockCmtstateJSLineCmtstateJSHTMLOpenCmtstateJSHTMLCloseCmtstateCSSstateCSSDqStrstateCSSSqStrstateCSSDqURLstateCSSSqURLstateCSSURLstateCSSBlockCmtstateCSSLineCmtstateErrorstateDead"
-var _state_index = [...]uint16{0, 9, 17, 30, 44, 60, 72, 83, 92, 100, 111, 118, 130, 142, 155, 170, 184, 192, 205, 218, 231, 244, 255, 271, 286, 296}
-var _state_index = [...]uint16{0, 9, 17, 30, 44, 60, 72, 83, 92, 100, 111, 118, 130, 142, 154, 167, 182, 196, 204, 217, 230, 243, 256, 267, 283, 298, 308, 317}
+var _state_index = [...]uint16{0, 9, 17, 30, 44, 60, 72, 83, 92, 100, 111, 118, 130, 142, 154, 167, 182, 196, 214, 233, 241, 254, 267, 280, 293, 304, 320, 335, 345, 354}
func (i state) String() string {