Atheme IRC Services: Denial of Service

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201209-09 / atheme
Release Date	September 25, 2012
Latest Revision	September 25, 2012: 1
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-irc/atheme-services	< 6.0.10	>= 6.0.10	All supported architectures

Related bugreports: #409103

Synopsis

A vulnerability has been found in Atheme which may lead to Denial of Service or a bypass of security restrictions.

2. Impact Information

Background

Atheme is a portable and secure set of open-source and modular IRC services. CertFP is certificate fingerprinting used to authenticate users to nicknames.

Description

The “myuser_delete()” function in account.c does not properly remove CertFP entries when deleting user accounts.

Impact

A remote authenticated attacker may be able to cause a Denial of Service condition or gain access to an Atheme IRC Services user account.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Atheme users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-irc/atheme-services-6.0.10"

4. References

CVE-2012-1576

Page updated September 25, 2012

Summary: This is a Gentoo Linux Security Advisory

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