CVE-2016-4052: Buffer Overflow
First published: Thu Apr 21 2016(Updated: )
Multiple stack-based buffer overflows in Squid 3.x before 3.5.17 and 4.x before 4.0.9 allow remote HTTP servers to cause a denial of service or execute arbitrary code via crafted Edge Side Includes (ESI) responses.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/squid | <3.5.17 | 3.5.17 |
| redhat/squid | <4.0.9 | 4.0.9 |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =15.10 | |
| Ubuntu Linux | =16.04 | |
| Squid Web Proxy Cache | =3.0 | |
| Squid Web Proxy Cache | =3.1 | |
| Squid Web Proxy Cache | =3.1.0.1 | |
| Squid Web Proxy Cache | =3.1.0.2 | |
| Squid Web Proxy Cache | =3.1.0.3 | |
| Squid Web Proxy Cache | =3.1.0.4 | |
| Squid Web Proxy Cache | =3.1.0.5 | |
| Squid Web Proxy Cache | =3.1.0.6 | |
| Squid Web Proxy Cache | =3.1.0.7 | |
| Squid Web Proxy Cache | =3.1.0.8 | |
| Squid Web Proxy Cache | =3.1.0.9 | |
| Squid Web Proxy Cache | =3.1.0.10 | |
| Squid Web Proxy Cache | =3.1.0.11 | |
| Squid Web Proxy Cache | =3.1.0.12 | |
| Squid Web Proxy Cache | =3.1.0.13 | |
| Squid Web Proxy Cache | =3.1.0.14 | |
| Squid Web Proxy Cache | =3.1.0.15 | |
| Squid Web Proxy Cache | =3.1.0.16 | |
| Squid Web Proxy Cache | =3.1.0.17 | |
| Squid Web Proxy Cache | =3.1.0.18 | |
| Squid Web Proxy Cache | =3.1.1 | |
| Squid Web Proxy Cache | =3.1.2 | |
| Squid Web Proxy Cache | =3.1.3 | |
| Squid Web Proxy Cache | =3.1.4 | |
| Squid Web Proxy Cache | =3.1.5 | |
| Squid Web Proxy Cache | =3.1.5.1 | |
| Squid Web Proxy Cache | =3.1.6 | |
| Squid Web Proxy Cache | =3.1.7 | |
| Squid Web Proxy Cache | =3.1.8 | |
| Squid Web Proxy Cache | =3.1.9 | |
| Squid Web Proxy Cache | =3.1.10 | |
| Squid Web Proxy Cache | =3.1.11 | |
| Squid Web Proxy Cache | =3.1.12 | |
| Squid Web Proxy Cache | =3.1.12.1 | |
| Squid Web Proxy Cache | =3.1.12.2 | |
| Squid Web Proxy Cache | =3.1.12.3 | |
| Squid Web Proxy Cache | =3.1.13 | |
| Squid Web Proxy Cache | =3.1.14 | |
| Squid Web Proxy Cache | =3.1.15 | |
| Squid Web Proxy Cache | =3.1.16 | |
| Squid Web Proxy Cache | =3.1.17 | |
| Squid Web Proxy Cache | =3.1.18 | |
| Squid Web Proxy Cache | =3.1.19 | |
| Squid Web Proxy Cache | =3.1.20 | |
| Squid Web Proxy Cache | =3.1.21 | |
| Squid Web Proxy Cache | =3.1.22 | |
| Squid Web Proxy Cache | =3.2.0.1 | |
| Squid Web Proxy Cache | =3.2.0.2 | |
| Squid Web Proxy Cache | =3.2.0.3 | |
| Squid Web Proxy Cache | =3.2.0.4 | |
| Squid Web Proxy Cache | =3.2.0.5 | |
| Squid Web Proxy Cache | =3.2.0.6 | |
| Squid Web Proxy Cache | =3.2.0.7 | |
| Squid Web Proxy Cache | =3.2.0.8 | |
| Squid Web Proxy Cache | =3.2.0.9 | |
| Squid Web Proxy Cache | =3.2.0.10 | |
| Squid Web Proxy Cache | =3.2.0.11 | |
| Squid Web Proxy Cache | =3.2.0.12 | |
| Squid Web Proxy Cache | =3.2.0.13 | |
| Squid Web Proxy Cache | =3.2.0.14 | |
| Squid Web Proxy Cache | =3.2.0.15 | |
| Squid Web Proxy Cache | =3.2.0.16 | |
| Squid Web Proxy Cache | =3.2.0.17 | |
| Squid Web Proxy Cache | =3.2.0.18 | |
| Squid Web Proxy Cache | =3.2.0.19 | |
| Squid Web Proxy Cache | =3.2.1 | |
| Squid Web Proxy Cache | =3.2.2 | |
| Squid Web Proxy Cache | =3.2.3 | |
| Squid Web Proxy Cache | =3.2.4 | |
| Squid Web Proxy Cache | =3.2.5 | |
| Squid Web Proxy Cache | =3.2.6 | |
| Squid Web Proxy Cache | =3.2.7 | |
| Squid Web Proxy Cache | =3.2.8 | |
| Squid Web Proxy Cache | =3.2.9 | |
| Squid Web Proxy Cache | =3.2.10 | |
| Squid Web Proxy Cache | =3.2.11 | |
| Squid Web Proxy Cache | =3.2.12 | |
| Squid Web Proxy Cache | =3.2.13 | |
| Squid Web Proxy Cache | =3.3.0 | |
| Squid Web Proxy Cache | =3.3.0.1 | |
| Squid Web Proxy Cache | =3.3.0.2 | |
| Squid Web Proxy Cache | =3.3.0.3 | |
| Squid Web Proxy Cache | =3.3.1 | |
| Squid Web Proxy Cache | =3.3.2 | |
| Squid Web Proxy Cache | =3.3.3 | |
| Squid Web Proxy Cache | =3.3.4 | |
| Squid Web Proxy Cache | =3.3.5 | |
| Squid Web Proxy Cache | =3.3.6 | |
| Squid Web Proxy Cache | =3.3.7 | |
| Squid Web Proxy Cache | =3.3.8 | |
| Squid Web Proxy Cache | =3.3.9 | |
| Squid Web Proxy Cache | =3.3.10 | |
| Squid Web Proxy Cache | =3.3.11 | |
| Squid Web Proxy Cache | =3.3.12 | |
| Squid Web Proxy Cache | =3.3.13 | |
| Squid Web Proxy Cache | =3.3.14 | |
| Squid Web Proxy Cache | =3.4.0.1 | |
| Squid Web Proxy Cache | =3.4.0.2 | |
| Squid Web Proxy Cache | =3.4.0.3 | |
| Squid Web Proxy Cache | =3.4.1 | |
| Squid Web Proxy Cache | =3.4.2 | |
| Squid Web Proxy Cache | =3.4.3 | |
| Squid Web Proxy Cache | =3.4.4 | |
| Squid Web Proxy Cache | =3.4.4.1 | |
| Squid Web Proxy Cache | =3.4.4.2 | |
| Squid Web Proxy Cache | =3.4.8 | |
| Squid Web Proxy Cache | =3.4.9 | |
| Squid Web Proxy Cache | =3.4.10 | |
| Squid Web Proxy Cache | =3.4.11 | |
| Squid Web Proxy Cache | =3.4.12 | |
| Squid Web Proxy Cache | =3.4.13 | |
| Squid Web Proxy Cache | =3.4.14 | |
| Squid Web Proxy Cache | =3.5.0.1 | |
| Squid Web Proxy Cache | =3.5.0.2 | |
| Squid Web Proxy Cache | =3.5.0.3 | |
| Squid Web Proxy Cache | =3.5.0.4 | |
| Squid Web Proxy Cache | =3.5.1 | |
| Squid Web Proxy Cache | =3.5.2 | |
| Squid Web Proxy Cache | =3.5.3 | |
| Squid Web Proxy Cache | =3.5.4 | |
| Squid Web Proxy Cache | =3.5.5 | |
| Squid Web Proxy Cache | =3.5.6 | |
| Squid Web Proxy Cache | =3.5.7 | |
| Squid Web Proxy Cache | =3.5.8 | |
| Squid Web Proxy Cache | =3.5.9 | |
| Squid Web Proxy Cache | =3.5.10 | |
| Squid Web Proxy Cache | =3.5.11 | |
| Squid Web Proxy Cache | =3.5.12 | |
| Squid Web Proxy Cache | =3.5.13 | |
| Squid Web Proxy Cache | =3.5.14 | |
| Squid Web Proxy Cache | =3.5.15 | |
| Squid Web Proxy Cache | =3.5.16 | |
| Squid Web Proxy Cache | =4.0.1 | |
| Squid Web Proxy Cache | =4.0.2 | |
| Squid Web Proxy Cache | =4.0.3 | |
| Squid Web Proxy Cache | =4.0.4 | |
| Squid Web Proxy Cache | =4.0.5 | |
| Squid Web Proxy Cache | =4.0.6 | |
| Squid Web Proxy Cache | =4.0.7 | |
| Squid Web Proxy Cache | =4.0.8 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
- http://www.debian.org/security/2016/dsa-3625
- http://www.openwall.com/lists/oss-security/2016/04/20/6
- http://www.openwall.com/lists/oss-security/2016/04/20/9
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/86788
- http://www.securityfocus.com/bid/91787
- http://www.securitytracker.com/id/1035647
- http://www.squid-cache.org/Advisories/SQUID-2016_6.txt
- http://www.ubuntu.com/usn/USN-2995-1
- https://access.redhat.com/errata/RHSA-2016:1138
- https://access.redhat.com/errata/RHSA-2016:1139
- https://access.redhat.com/errata/RHSA-2016:1140
- https://security.gentoo.org/glsa/201607-01
- http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12697.patch
- http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13235.patch
- http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14034.patch
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1329144
- http://seclists.org/oss-sec/2016/q2/120
- https://bugzilla.redhat.com/show_bug.cgi?id=1329136
Frequently Asked Questions
What is the severity of CVE-2016-4052?
The severity of CVE-2016-4052 is high due to its potential to cause denial of service and execute arbitrary code.
How do I fix CVE-2016-4052?
To fix CVE-2016-4052, upgrade Squid to version 3.5.17 or 4.0.9 or later.
What systems are affected by CVE-2016-4052?
CVE-2016-4052 affects Squid versions prior to 3.5.17 and 4.x prior to 4.0.9.
How does CVE-2016-4052 exploit work?
CVE-2016-4052 exploits multiple stack-based buffer overflows in Squid by sending crafted Edge Side Includes (ESI) responses.
Can I mitigate CVE-2016-4052 without upgrading?
While upgrading is the best solution, temporary measures may include limiting external access to Squid or configuring firewall rules to manage incoming HTTP responses.
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