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d01be5cf84
This is a read past end of buffer issue in the json_parse test app, which can happened with malformed json data. It's not an issue with the library itself. For what ever reason this CVE has a base score of 9.8. Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-32292 Upstream issue: https://github.com/json-c/json-c/issues/654 The CVE is fixed with version 0.16 (which is already in all active branches of poky). (From OE-Core rev: a7b93651028b55d71b8db53ea831eee7fd539f33) Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com> Signed-off-by: Steve Sakoman <steve@sakoman.com>
31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
From da22ae6541584068f8169315274016920da11d8b Mon Sep 17 00:00:00 2001
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From: Marc <34656315+MarcT512@users.noreply.github.com>
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Date: Fri, 7 Aug 2020 10:49:45 +0100
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Subject: [PATCH] Fix read past end of buffer
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Fixes: CVE-2021-32292
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Issue: https://github.com/json-c/json-c/issues/654
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Upstream-Status: Backport [4e9e44e5258dee7654f74948b0dd5da39c28beec]
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CVE: CVE-2021-32292
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Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
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---
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apps/json_parse.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/apps/json_parse.c b/apps/json_parse.c
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index bba4622..72b31a8 100644
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--- a/apps/json_parse.c
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+++ b/apps/json_parse.c
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@@ -82,7 +82,8 @@ static int parseit(int fd, int (*callback)(struct json_object *))
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int parse_end = json_tokener_get_parse_end(tok);
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if (obj == NULL && jerr != json_tokener_continue)
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{
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- char *aterr = &buf[start_pos + parse_end];
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+ char *aterr = (start_pos + parse_end < sizeof(buf)) ?
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+ &buf[start_pos + parse_end] : "";
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fflush(stdout);
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int fail_offset = total_read - ret + start_pos + parse_end;
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fprintf(stderr, "Failed at offset %d: %s %c\n", fail_offset,
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