medium
5
CWE
20
Advisory Published
Updated

CVE-2013-4123: Input Validation

First published: Mon Sep 16 2013(Updated: )

client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Squid Web Proxy Cache=3.3.0
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
SUSE Linux=12.3
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

Remedy

http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch

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Reference Links

Frequently Asked Questions

  • What is the risk associated with CVE-2013-4123?

    CVE-2013-4123 can lead to a denial of service, allowing remote attackers to crash the affected Squid server.

  • Which versions of Squid are affected by CVE-2013-4123?

    CVE-2013-4123 affects Squid versions 3.2.0 to 3.2.12 and 3.3.0 to 3.3.7.

  • How can I resolve CVE-2013-4123?

    To fix CVE-2013-4123, upgrade to Squid version 3.2.13 or later, or 3.3.8 or later.

  • What type of attack does CVE-2013-4123 facilitate?

    CVE-2013-4123 facilitates a remote denial of service attack via a crafted HTTP Host header.

  • Are there any specific configurations to avoid with CVE-2013-4123?

    Users should avoid using vulnerable versions of Squid or improperly configure the HTTP Host header in their requests.

Company

Resources

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