GLSA 200411-16: zip: Path name buffer overflow

http://security.gentoo.org/

Severity:	normal
Title:	zip: Path name buffer overflow
Date:	11/09/2004
Bugs:	#70227
ID:	200411-16

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.

Background

zip is a compression and file packaging utility.

Affected packages

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

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.

Workaround

There is no known workaround at this time.

Resolution

All zip users should upgrade to the latest version:

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

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200411-16.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.