[gentoo-announce] [ GLSA 201309-01 ] Cyrus-SASL: Denial of Service

[news 28]

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Gentoo Linux Security Advisory GLSA 201309-01

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http://security.gentoo.org/

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Severity: Normal

Title: Cyrus-SASL: Denial of Service

Date: September 01, 2013

Bugs: #476764

ID: 201309-01

 

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Synopsis

========

 

A NULL pointer dereference in Cyrus-SASL may allow remote attackers to

cause a Denial of Service condition.

 

Background

==========

 

Cyrus-SASL is an implementation of the Simple Authentication and

Security Layer.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 dev-libs/cyrus-sasl < 2.1.26-r3 >= 2.1.26-r3

 

Description

===========

 

In the GNU C Library (glibc) from version 2.17 onwards, the crypt()

function call can return NULL when the salt violates specifications or

the system is in FIPS-140 mode and a DES or MD5 hashed password is

passed. When Cyrus-SASL's authentication mechanisms call crypt(), a

NULL may be returned.

 

Impact

======

 

A remote attacker could trigger this vulnerability to cause a Denial of

Service condition.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All Cyrus-SASL users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=dev-libs/cyrus-sasl-2.1.26-r3"

 

References

==========

 

[ 1 ] CVE-2013-4122

http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4122

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-201309-01.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 ( -at -) gentoo.org or alternatively, you may file a bug at

https://bugs.gentoo.org.

 

License

=======

 

Copyright 2013 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