Joined: 12 May 2004
|Posted: Sun Apr 06, 2008 6:26 pm Post subject: [ GLSA 200804-06 ] UnZip: User-assisted execution of arbitra
|Gentoo Linux Security Advisory
Title: UnZip: User-assisted execution of arbitrary code (GLSA 200804-06)
Date: April 06, 2008
A double free vulnerability discovered in UnZip might lead to the execution of arbitrary code.
Info-ZIP's UnZip is a tool to list and extract files inside PKZIP compressed files.
Vulnerable: < 5.52-r2
Unaffected: >= 5.52-r2
Architectures: All supported architectures
Tavis Ormandy of the Google Security Team discovered that the NEEDBITS macro in the inflate_dynamic() function in the file inflate.c can be invoked using invalid buffers, which can lead to a double free.
Remote attackers could entice a user or automated system to open a specially crafted ZIP file that might lead to the execution of arbitrary code or a Denial of Service.
There is no known workaround at this time.
All UnZip users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/unzip-5.52-r2"