medium
6.8
CWE
119 NVD-CWE-Other
Advisory Published
CVE Published
Updated

CVE-2011-3205: Buffer Overflow

First published: Tue Aug 30 2011(Updated: )

A flaw was reported [1] in how Squid parsed responses from Gopher servers. This flaw could result in a buffer overflow if a Gopher server were to return a line longer than 4096 bytes, leading to memory corruption and a crash. This flaw is an extension of SQUID-2005:1 (or <a href="https://access.redhat.com/security/cve/CVE-2005-0094">CVE-2005-0094</a>) in Squid 3.x, due to increased packet read sizes. A malicious user could setup a fake Gopher server and forward requests to it through Squid. A specially crafted response from that server could cause Squid to restart. This has been corrected in upstream versions 3.2.0.11, 3.1.15, and 3.0.STABLE26. Patches for 3.0 [2], 3.1 [3], and 3.2 [4] are available. [1] <a href="http://www.squid-cache.org/Advisories/SQUID-2011_3.txt">http://www.squid-cache.org/Advisories/SQUID-2011_3.txt</a> [2] <a href="http://www.squid-cache.org/Versions/v3/3.0/changesets/squid-3.0-9193.patch">http://www.squid-cache.org/Versions/v3/3.0/changesets/squid-3.0-9193.patch</a> [3] <a href="http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10363.patch">http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10363.patch</a> [4] <a href="http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11294.patch">http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11294.patch</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Squid Web Proxy Cache=3.0.stable1
Squid Web Proxy Cache=3.0.stable2
Squid Web Proxy Cache=3.0.stable3
Squid Web Proxy Cache=3.0.stable4
Squid Web Proxy Cache=3.0.stable5
Squid Web Proxy Cache=3.0.stable6
Squid Web Proxy Cache=3.0.stable7
Squid Web Proxy Cache=3.0.stable8
Squid Web Proxy Cache=3.0.stable9
Squid Web Proxy Cache=3.0.stable10
Squid Web Proxy Cache=3.0.stable11
Squid Web Proxy Cache=3.0.stable11-rc1
Squid Web Proxy Cache=3.0.stable12
Squid Web Proxy Cache=3.0.stable13
Squid Web Proxy Cache=3.0.stable14
Squid Web Proxy Cache=3.0.stable15
Squid Web Proxy Cache=3.0.stable16
Squid Web Proxy Cache=3.0.stable16-rc1
Squid Web Proxy Cache=3.0.stable17
Squid Web Proxy Cache=3.0.stable18
Squid Web Proxy Cache=3.0.stable19
Squid Web Proxy Cache=3.0.stable20
Squid Web Proxy Cache=3.0.stable21
Squid Web Proxy Cache=3.0.stable22
Squid Web Proxy Cache=3.0.stable23
Squid Web Proxy Cache=3.0.stable24
Squid Web Proxy Cache=3.0.stable25
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=3.1.13
Squid Web Proxy Cache=3.1.14
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

Remedy

http://www.squid-cache.org/Versions/v2/2.HEAD/changesets/12710.patch

Remedy

http://www.squid-cache.org/Versions/v3/3.0/changesets/squid-3.0-9193.patch

Remedy

http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10363.patch

Remedy

http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11294.patch

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=734583

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-3205?

    CVE-2011-3205 has a high severity due to potential buffer overflow leading to memory corruption and crashes.

  • What versions are affected by CVE-2011-3205?

    CVE-2011-3205 affects multiple versions of Squid including 3.0.stable1 through 3.0.stable24 and several 3.1.x versions.

  • How do I fix CVE-2011-3205?

    To fix CVE-2011-3205, upgrade to a version of Squid that is not affected by this vulnerability.

  • What type of vulnerability is CVE-2011-3205?

    CVE-2011-3205 is a buffer overflow vulnerability affecting Squid proxy server's handling of Gopher responses.

  • What are the potential impacts of CVE-2011-3205?

    The potential impacts of CVE-2011-3205 include crashes of the Squid service and possible exploitation leading to arbitrary code execution.

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