mirrors/meta-openembedded
1
0
Fork 0
mirror of https://github.com/openembedded/meta-openembedded.git synced 2026-06-13 17:39:57 +00:00
Code Issues Projects Releases Wiki Activity

c-ares: fix CVE-2024-25629

Browse Source 
c-ares is a C library for asynchronous DNS requests.
`ares__read_line()` is used to parse local configuration
files such as `/etc/resolv.conf`, `/etc/nsswitch.conf`,
the `HOSTALIASES` file, and if using a c-ares version
prior to 1.27.0, the `/etc/hosts` file. If any of these
configuration files has an embedded `NULL` character as
the first character in a new line, it can lead to
attempting to read memory prior to the start of the given
buffer which may result in a crash. This issue is fixed
in c-ares 1.27.0. No known workarounds exist.

References:
https://nvd.nist.gov/vuln/detail/CVE-2024-25629
https://github.com/c-ares/c-ares/security/advisories/GHSA-mg26-v6qh-x48q
https://security-tracker.debian.org/tracker/CVE-2024-25629

Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
This commit is contained in:
Yogita Urade
2024-03-12 11:44:23 +00:00
committed by Armin Kuster
parent da98a75f37
commit 1a3b9da20a
2 changed files with 35 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta-oe/recipes-support/c-ares/c-ares/CVE-2024-25629.patch
+34
View File
@@ -0,0 +1,34 @@
From: a804c04ddc8245fc8adf0e92368709639125e183 Mon Sep 17 00:00:00 2001
From: Brad House <brad@brad-house.com>
Date: Mon, 11 Mar 2024 14:29:39 +0000
Subject: [PATCH] Merge pull request from GHSA-mg26-v6qh-x48q
CVE: CVE-2024-25629
Upstream-Status: Backport [https://github.com/c-ares/c-ares/commit/a804c04ddc8245fc8adf0e92368709639125e183]
Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
---
src/lib/ares__read_line.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/lib/ares__read_line.c b/src/lib/ares__read_line.c
index c62ad2a..d6625a3 100644
--- a/src/lib/ares__read_line.c
+++ b/src/lib/ares__read_line.c
@@ -49,6 +49,14 @@ int ares__read_line(FILE *fp, char **buf, size_t *bufsize)
if (!fgets(*buf + offset, bytestoread, fp))
return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF;
len = offset + strlen(*buf + offset);
+
+ /* Probably means there was an embedded NULL as the first character in
+ * the line, throw away line */
+ if (len == 0) {
+ offset = 0;
+ continue;
+ }
+
if ((*buf)[len - 1] == '\n')
{
(*buf)[len - 1] = 0;
--
2.40.0
meta-oe/recipes-support/c-ares/c-ares_1.18.1.bb
+1
View File
@@ -10,6 +10,7 @@ SRC_URI = "git://github.com/c-ares/c-ares.git;branch=main;protocol=https \
file://CVE-2023-31130.patch \
file://CVE-2023-32067.patch \
file://CVE-2023-31147.patch \
file://CVE-2024-25629.patch \
"
SRCREV = "2aa086f822aad5017a6f2061ef656f237a62d0ed"