zip: Path name buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200411-16 / zip
Release Date	November 09, 2004
Latest Revision	May 22, 2006: 02
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-arch/zip	<= 2.3-r3	>= 2.3-r4	All supported architectures

Related bugreports: #70227

Synopsis

zip contains a buffer overflow when creating a ZIP archive of files with very long path names. This could lead to the execution of arbitrary code.

2. Impact Information

Background

zip is a compression and file packaging utility.

Description

zip does not check the resulting path length when doing recursive folder compression.

Impact

An attacker could exploit this by enticing another user or web application to create an archive including a specially-crafted path name, potentially resulting in the execution of arbitrary code with the permissions of the user running zip.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All zip users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/zip-2.3-r4"

4. References

Page updated November 09, 2004

Summary: This is a Gentoo Linux Security Advisory

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