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=========================================================== Ubuntu Security Notice USN-349-1 September 19, 2006 gzip vulnerabilities CVE-2006-4334, CVE-2006-4335, CVE-2006-4336, CVE-2006-4337, CVE-2006-4338 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.04 Ubuntu 5.10 Ubuntu 6.06 LTS This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 5.04: gzip 1.3.5-9ubuntu3.5 Ubuntu 5.10: gzip 1.3.5-11ubuntu2.1 Ubuntu 6.06 LTS: gzip 1.3.5-12ubuntu0.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Tavis Ormandy discovered that gzip did not sufficiently verify the validity of gzip or compress archives while unpacking. By tricking an user or automated system into unpacking a specially crafted compressed file, this could be exploited to execute arbitrary code with the user's privileges.