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Resolves: #2130253 - CVE-2022-41318 squid: buffer-over-read in SSPI and SMB

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authentication
This commit is contained in:
Luboš Uhliarik 2022-11-07 17:57:07 +01:00
parent 152f601afc
commit 15d476e3f5
2 changed files with 46 additions and 1 deletions
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38
squid-5.5-CVE-2022-41318.patch Normal file
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@ -0,0 +1,38 @@
commit 4031c6c2b004190fdffbc19dab7cd0305a2025b7 (refs/remotes/origin/v4, refs/remotes/github/v4, refs/heads/v4)
Author: Amos Jeffries <yadij@users.noreply.github.com>
Date: 2022-08-09 23:34:54 +0000
Bug 3193 pt2: NTLM decoder truncating strings (#1114)
The initial bug fix overlooked large 'offset' causing integer
wrap to extract a too-short length string.
Improve debugs and checks sequence to clarify cases and ensure
that all are handled correctly.
diff --git a/lib/ntlmauth/ntlmauth.cc b/lib/ntlmauth/ntlmauth.cc
index 5d9637290..f00fd51f8 100644
--- a/lib/ntlmauth/ntlmauth.cc
+++ b/lib/ntlmauth/ntlmauth.cc
@@ -107,10 +107,19 @@ ntlm_fetch_string(const ntlmhdr *packet, const int32_t packet_size, const strhdr
int32_t o = le32toh(str->offset);
// debug("ntlm_fetch_string(plength=%d,l=%d,o=%d)\n",packet_size,l,o);
- if (l < 0 || l > NTLM_MAX_FIELD_LENGTH || o + l > packet_size || o == 0) {
- debug("ntlm_fetch_string: insane data (pkt-sz: %d, fetch len: %d, offset: %d)\n", packet_size,l,o);
+ if (l < 0 || l > NTLM_MAX_FIELD_LENGTH) {
+ debug("ntlm_fetch_string: insane string length (pkt-sz: %d, fetch len: %d, offset: %d)\n", packet_size,l,o);
return rv;
}
+ else if (o <= 0 || o > packet_size) {
+ debug("ntlm_fetch_string: insane string offset (pkt-sz: %d, fetch len: %d, offset: %d)\n", packet_size,l,o);
+ return rv;
+ }
+ else if (l > packet_size - o) {
+ debug("ntlm_fetch_string: truncated string data (pkt-sz: %d, fetch len: %d, offset: %d)\n", packet_size,l,o);
+ return rv;
+ }
+
rv.str = (char *)packet + o;
rv.l = 0;
if ((flags & NTLM_NEGOTIATE_ASCII) == 0) {

9
squid.spec
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@ -2,7 +2,7 @@
Name: squid
Version: 5.5
Release: 2%{?dist}
Release: 3%{?dist}
Summary: The Squid proxy caching server
Epoch: 7
# See CREDITS for breakdown of non GPLv2+ code
@ -45,6 +45,8 @@ Patch208: squid-5.1-test-store-cppsuite.patch
# Security patches
# https://bugzilla.redhat.com/show_bug.cgi?id=2100721
Patch501: squid-5.5-CVE-2021-46784.patch
# https://bugzilla.redhat.com/show_bug.cgi?id=2129771
Patch502: squid-5.5-CVE-2022-41318.patch
# cache_swap.sh
Requires: bash gawk
@ -120,6 +122,7 @@ lookup program (dnsserver), a program for retrieving FTP data
%patch208 -p1 -b .test-store-cpp
%patch501 -p1 -b .CVE-2021-46784
%patch502 -p1 -b .CVE-2022-41318
# https://bugzilla.redhat.com/show_bug.cgi?id=1679526
# Patch in the vendor documentation and used different location for documentation
@ -351,6 +354,10 @@ fi
%changelog
* Mon Nov 07 2022 Luboš Uhliarik <luhliari@redhat.com> - 7:5.5-3
- Resolves: #2130253 - CVE-2022-41318 squid: buffer-over-read in SSPI and SMB
authentication
* Mon Jul 11 2022 Luboš Uhliarik <luhliari@redhat.com> - 7:5.5-2
- Resolves: #2100785 - CVE-2021-46784 squid: DoS when processing gopher server
responses