GLSA 200705-25: file: Integer overflow

http://security.gentoo.org/

Severity:	high
Title:	file: Integer overflow
Date:	05/31/2007
Bugs:	#179583
ID:	200705-25

Synopsis

An integer overflow vulnerability has been reported in file allowing for the user-assisted execution of arbitrary code.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-apps/file	< 4.21	>= 4.21	x86, ppc, hppa

Description

Colin Percival from FreeBSD reported that the previous fix for the file_printf() buffer overflow introduced a new integer overflow.

Impact

A remote attacker could entice a user to run the file program on an overly large file (more than 1Gb) that would trigger an integer overflow on 32-bit systems, possibly leading to the execution of arbitrary code with the rights of the user running file.

Workaround

There is no known workaround at this time.

Resolution

Since file is a system package, all Gentoo users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-apps/file-4.21"

References

CVE-2007-2799

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200705-25.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.