GLSA 200909-17: ZNC: Directory traversal

http://security.gentoo.org/

Severity:	normal
Title:	ZNC: Directory traversal
Date:	09/13/2009
Bugs:	#278684
ID:	200909-17

Synopsis

A directory traversal was found in ZNC, allowing for overwriting of arbitrary files.

Background

ZNC is an advanced IRC bouncer.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-irc/znc	< 0.074	>= 0.074	All supported architectures

Description

The vendor reported a directory traversal vulnerability when processing DCC SEND requests.

Impact

A remote, authenticated user could send a specially crafted DCC SEND request to overwrite arbitrary files with the privileges of the user running ZNC, and possibly cause the execution of arbitrary code e.g. by uploading a malicious ZNC module.

Workaround

There is no known workaround at this time.

Resolution

All ZNC users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-irc/znc-0.074"

References

CVE-2009-2658

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200909-17.xml

Concerns?

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 https://bugs.gentoo.org.