zoo: Stack-based buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200603-05 / zoo
Release Date	March 06, 2006
Latest Revision	March 06, 2006: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-arch/zoo	< 2.10-r1	>= 2.10-r1	All supported architectures

Related bugreports: #123782

Synopsis

A stack-based buffer overflow in zoo may be exploited to execute arbitrary code through malicious ZOO archives.

2. Impact Information

Background

zoo is a file archiving utility for maintaining collections of files, written by Rahul Dhesi.

Description

Jean-Sebastien Guay-Leroux discovered a boundary error in the fullpath() function in misc.c when processing overly long file and directory names in ZOO archives.

Impact

An attacker could craft a malicious ZOO archive and entice someone to open it using zoo. This would trigger a stack-based buffer overflow and potentially allow execution of arbitrary code with the rights of the victim user.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All zoo users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/zoo-2.10-r1"

4. References

Page updated March 06, 2006

Summary: This is a Gentoo Linux Security Advisory

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