squid: patch CVE-2024-37894

Reference: https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-daemons/squid/files/CVE-2024-37894.patch

@@ -0,0 +1,36 @@
+From 920563e7a080155fae3ced73d6198781e8b0ff04 Mon Sep 17 00:00:00 2001
+From: Francesco Chemolli <5175948+kinkie@users.noreply.github.com>
+Date: Sun, 2 Jun 2024 14:41:16 +0000
+Subject: [PATCH] Bug 5378: type mismatch in libTrie (#1830)
+
+TrieNode::add() incorrectly computed an offset of an internal data
+structure, resulting in out-of-bounds memory accesses that could cause
+corruption or crashes.
+
+This bug was discovered and detailed by Joshua Rogers at
+https://megamansec.github.io/Squid-Security-Audit/esi-underflow.html
+where it was filed as "Buffer Underflow in ESI".
+
+CVE: CVE-2024-37894
+Upstream-Status: Backport [https://github.com/squid-cache/squid/commit/920563e7a080155fae3ced73d6198781e8b0ff04]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ lib/libTrie/TrieNode.cc | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/libTrie/TrieNode.cc b/lib/libTrie/TrieNode.cc
+index 0f991a06d..d417e0f54 100644
+--- a/lib/libTrie/TrieNode.cc
++++ b/lib/libTrie/TrieNode.cc
+@@ -32,7 +32,7 @@ TrieNode::add(char const *aString, size_t theLength, void *privatedata, TrieChar
+     /* We trust that privatedata and existent keys have already been checked */
+ 
+     if (theLength) {
+-        int index = transform ? (*transform)(*aString): *aString;
++        const unsigned char index = transform ? (*transform)(*aString): *aString;
+ 
+         if (!internal[index])
+             internal[index] = new TrieNode;
+-- 
+2.30.2
+

meta-networking/recipes-daemons/squid/squid_6.9.bb

@@ -20,6 +20,7 @@ SRC_URI = "http://www.squid-cache.org/Versions/v${MAJ_VER}/${BPN}-${PV}.tar.xz \
            file://volatiles.03_squid \
            file://0002-squid-make-squid-conf-tests-run-on-target-device.patch \
            file://squid.nm \
+           file://CVE-2024-37894.patch \
            "
 
 SRC_URI[sha256sum] = "1ad72d46e1cb556e9561214f0fb181adb87c7c47927ef69bc8acd68a03f61882"