GLSA 200903-02 ZNC: Privilege escalation
Posted on: 03/06/2009 11:45 PM

A new security update has been released for Gentoo Linux - ZNC: Privilege escalation. Here the announcement:

Gentoo Linux Security Advisory GLSA 200903-02
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http://security.gentoo.org/
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Severity: High
Title: ZNC: Privilege escalation
Date: March 06, 2009
Bugs: #260148
ID: 200903-02

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Synopsis
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A vulnerability in ZNC allows for privilege escalation.

Background
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ZNC is an advanced IRC bouncer.

Affected packages
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Package / Vulnerable / Unaffected
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1 net-irc/znc lt; 0.066 gt;=3D 0.066

Description
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cnu discovered multiple CRLF injection vulnerabilities in ZNC's
webadmin module.

Impact
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A remote authenticated attacker could modify the znc.conf configuration
file and gain privileges via newline characters in e.g. the QuitMessage
field, and possibly execute arbitrary code.

Workaround
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There is no known workaround at this time.

Resolution
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All ZNC users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=3Dnet-irc/znc-0.066"

References
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[ 1 ] CVE-2009-0759
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2009-0759

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-200903-02.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 2009 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



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