GLSA 200712-13: E2fsprogs: Multiple buffer overflows

http://security.gentoo.org/

Severity:	normal
Title:	E2fsprogs: Multiple buffer overflows
Date:	12/18/2007
Bugs:	#201546
ID:	200712-13

Synopsis

Multiple heap-based buffer overflows in E2fsprogs could result in the execution of arbitrary code.

Background

E2fsprogs provides utilities for use with the ext2 and ext3 file systems including the libext2fs library that allows user-level programs to manipulate an ext2 or ext3 file system.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-fs/e2fsprogs	< 1.40.3	>= 1.40.3	All supported architectures

Description

Rafal Wojtczuk (McAfee AVERT Research) discovered multiple integer overflows in libext2fs, that are triggered when processing information from within the file system, resulting in heap-based buffer overflows.

Impact

An attacker could entice a user to process a specially-crafted ext2 or ext3 file system image (with tools linking against libext2fs, e.g. fsck, forensic tools or Xen's pygrub), possibly resulting in the execution of arbitrary code with the privileges of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All E2fsprogs users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-fs/e2fsprogs-1.40.3"

References

CVE-2007-5497

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200712-13.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.