[arch-security] [ASA-201503-3] lib32-elfutils: directory traversal

[Levente Polyak]

Arch Linux Security Advisory ASA-201503-3
=========================================

Severity: Medium
Date    : 2015-03-02
CVE-ID  : CVE-2014-9447
Package : lib32-elfutils
Type    : directory traversal
Remote  : Yes
Link    : https://wiki.archlinux.org/index.php/CVE

Summary
=======

The package lib32-elfutils before version 0.161-2 is vulnerable to
directory traversal.

Resolution
==========

Upgrade to 0.161-2.

# pacman -Syu "lib32-elfutils>=0.161-2"

The problem has been fixed upstream but no release is available yet.

Workaround
==========

None.

Description
===========

Directory traversal vulnerability in the read_long_names function in
libelf/elf_begin.c allows remote attackers to write to arbitrary files
to the root directory via a / (slash) in a crafted archive, as
demonstrated using the ar program.

Impact
======

A remote attacker is able to use a specially crafted archive to write to
arbitrary files to the root directory.

References
==========

http://www.openwall.com/lists/oss-security/2014/12/29/2
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-9447
https://bugs.archlinux.org/task/44020

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