zip: Path name buffer overflow — GLSA 200411-16

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.

Affected Packages

app-arch/zip on all architectures
Affected versions <= 2.3-r3
Unaffected versions >= 2.3-r4

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.

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

Release Date
November 09, 2004

Latest Revision
May 22, 2006: 02

Severity
normal

Exploitable
remote

Bugzilla entries