Files
buildroot/package/busybox/0015-awk.c-fix-CVE-2023-42366-bug-15874.patch
Thomas Petazzoni 4194a9aaec package/busybox: fix pending CVEs
This commit adds patches, which were all backported from upstream, or
submitted upstream, and that fix various CVEs. To facilitate the
backporting work, we took the backports from openembedded-core.

CVE-2021-42380: this one is not marked by NVD as affecting 1.36.1, but
its fix was merged after 1.36.1, so it seems like the NVD data is
incorrect. Therefore, no need for a BUSYBOX_IGNORE_CVES entry. Patch
is upstream, backport taken from openembedded-core.

CVE-2023-42363, CVE-2023-42364, CVE-2023-42365: patches are upstream,
backports taken from openembedded-core.

CVE-2023-42366: patch has been submitted upstream but not merged,
patch taken from openembedded-core.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 75c594d446)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2025-02-04 15:57:23 +01:00

44 lines
1.4 KiB
Diff

From 54e64812090f58cffca08fcf11d2dbc471c964e1 Mon Sep 17 00:00:00 2001
From: Valery Ushakov <uwe@stderr.spb.ru>
Date: Wed, 24 Jan 2024 22:24:41 +0300
Subject: [PATCH] awk.c: fix CVE-2023-42366 (bug #15874)
Make sure we don't read past the end of the string in next_token()
when backslash is the last character in an (invalid) regexp.
a fix and issue reported in bugzilla
https://bugs.busybox.net/show_bug.cgi?id=15874
Upstream-Status: Submitted [http://lists.busybox.net/pipermail/busybox/2024-May/090766.html]
CVE: CVE-2023-42366
Signed-off-by: Khem Raj <raj.khem@gmail.com>
[Thomas: https://git.openembedded.org/openembedded-core/tree/meta/recipes-core/busybox/busybox/0001-awk.c-fix-CVE-2023-42366-bug-15874.patch?id=e0ff4813b1cf4df0d851c857d57fb88d7db51bdd]
Upstream: http://lists.busybox.net/pipermail/busybox/2024-May/090766.html
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
editors/awk.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/editors/awk.c b/editors/awk.c
index 9467f4644..947195333 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -1168,9 +1168,11 @@ static uint32_t next_token(uint32_t expected)
s[-1] = bb_process_escape_sequence((const char **)&pp);
if (*p == '\\')
*s++ = '\\';
- if (pp == p)
+ if (pp == p) {
+ if (*p == '\0')
+ syntax_error(EMSG_UNEXP_EOS);
*s++ = *p++;
- else
+ } else
p = pp;
}
}
--
2.47.1