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Gentoo Linux Security Advisory                           GLSA 200701-22
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Squid: Multiple Denial of Service vulnerabilities
      Date: January 25, 2007
      Bugs: #162364
        ID: 200701-22

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Synopsis
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Two vulnerabilities have been found in Squid which make it susceptible
to Denial of Service attacks.

Background
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Squid is a multi-protocol proxy server.

Affected packages
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    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  net-proxy/squid       < 2.6.7                            >=3D 2.6.7

Description
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Squid fails to correctly handle ftp:// URI's. There is also an error in
the external_acl queue which can cause an infinite looping condition.

Impact
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An attacker could attempt to retrieve a specially crafted URI via a
Squid server causing the service to crash. If an attacker could
generate a sufficiently high load on the Squid services, they could
cause a Denial of Service by forcing Squid into an infinite loop.

Workaround
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There is no known workaround at this time.

Resolution
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All Squid users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=3Dnet-proxy/squid-2.6.7"

References
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  [ 1 ] CVE-2007-0247
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2007-0247
  [ 2 ] CVE-2007-0248
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2007-0248

Availability
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This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200701-22.xml

Concerns?
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Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
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Copyright 2007 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5