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go: fix CVE-2019-17596

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2017d88dbc

(From OE-Core rev: a8adb7d23172acb587c259a28aa0c9e2df83f228)

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Hongxu Jia
2020-01-17 19:14:32 +02:00
committed by Richard Purdie
parent d8da51bd3b
commit 47de27d734
2 changed files with 43 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
meta/recipes-devtools/go/go-1.12.inc
View File

@@ -17,6 +17,7 @@ SRC_URI += "\
file://0007-cmd-go-make-GOROOT-precious-by-default.patch \
file://0008-use-GOBUILDMODE-to-set-buildmode.patch \
file://0001-release-branch.go1.12-security-net-textproto-don-t-n.patch \
file://0010-fix-CVE-2019-17596.patch \
"
SRC_URI_append_libc-musl = " file://0009-ld-replace-glibc-dynamic-linker-with-musl.patch"

42
meta/recipes-devtools/go/go-1.12/0010-fix-CVE-2019-17596.patch Normal file
View File

@@ -0,0 +1,42 @@
From f1783e1ce44a86c000a7c380a57a805c89c3efbe Mon Sep 17 00:00:00 2001
From: Katie Hockman <katie@golang.org>
Date: Mon, 14 Oct 2019 16:42:21 -0400
Subject: [PATCH] crypto/dsa: prevent bad public keys from causing panic
dsa.Verify might currently use a nil s inverse in a
multiplication if the public key contains a non-prime Q,
causing a panic. Change this to check that the mod
inverse exists before using it.
Fixes CVE-2019-17596
Change-Id: I94d5f3cc38f1b5d52d38dcb1d253c71b7fd1cae7
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/572809
Reviewed-by: Filippo Valsorda <valsorda@google.com>
(cherry picked from commit 9119dfb0511326d4485b248b83d4fde19c95d0f7)
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/575232
CVE: CVE-2019-17596
Upstream-Status: Backport [https://github.com/golang/go/commit/2017d88dbc096381d4f348d2fb08bfb3c2b7ed73]
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
---
src/crypto/dsa/dsa.go | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/crypto/dsa/dsa.go b/src/crypto/dsa/dsa.go
index 575314b..2fc4f1f 100644
--- a/src/crypto/dsa/dsa.go
+++ b/src/crypto/dsa/dsa.go
@@ -279,6 +279,9 @@ func Verify(pub *PublicKey, hash []byte, r, s *big.Int) bool {
}
w := new(big.Int).ModInverse(s, pub.Q)
+ if w == nil {
+ return false
+ }
n := pub.Q.BitLen()
if n&7 != 0 {
--
2.23.0