GLSA 200704-13: File: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	File: Denial of Service
Date:	04/17/2007
Bugs:	#174217
ID:	200704-13

Synopsis

A vulnerability has been discovered in file allowing for a denial of service.

Background

file is a utility that identifies a file format by scanning binary data for patterns.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-apps/file	== 4.21	>= 4.21-r1	All supported architectures

Description

Conor Edberg discovered an error in the way file processes a specific regular expression.

Impact

A remote attacker could entice a user to open a specially crafted file, using excessive CPU ressources and possibly leading to a Denial of Service. Note that this vulnerability could be also triggered through an automatic file scanner like amavisd-new.

Workaround

There is no known workaround at this time.

Resolution

All file users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-apps/file-4.20-r1"

References

CVE-2007-2026

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200704-13.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.