UnZip: User-assisted execution of arbitrary code

UnZip: User-assisted execution of arbitrary code A double free vulnerability discovered in UnZip might lead to the execution of arbitrary code. unzip April 06, 2008 April 06, 2008: 01 213761 remote 5.52-r2 5.52-r2

Info-ZIP's UnZip is a tool to list and extract files inside PKZIP compressed files.

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"

CVE-2008-0888 rbu rbu rbu