GLSA 200603-21: Sendmail: Race condition in the handling of asynchronous signals

http://security.gentoo.org/

Severity:	high
Title:	Sendmail: Race condition in the handling of asynchronous signals
Date:	03/22/2006
Bugs:	#125623
ID:	200603-21

Synopsis

Sendmail is vulnerable to a race condition which could lead to the execution of arbitrary code with sendmail privileges.

Background

Sendmail is a popular mail transfer agent (MTA).

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
mail-mta/sendmail	< 8.13.6	>= 8.13.6	All supported architectures

Description

ISS discovered that Sendmail is vulnerable to a race condition in the handling of asynchronous signals.

Impact

An attacker could exploit this via certain crafted timing conditions.

Workaround

There is no known workaround at this time.

Resolution

All Sendmail users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=mail-mta/sendmail-8.13.6"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200603-21.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.