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=========================================================== Ubuntu Security Notice USN-427-1 February 23, 2007 enigmail vulnerability CVE-2006-5877 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.10 Ubuntu 6.06 LTS Ubuntu 6.10 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 5.10: mozilla-thunderbird-enigmail 2:0.94-0ubuntu0.5.10.1 Ubuntu 6.06 LTS: mozilla-thunderbird-enigmail 2:0.94-0ubuntu4.3 Ubuntu 6.10: mozilla-thunderbird-enigmail 2:0.94-0ubuntu5.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Mikhail Markin reported that enigmail incorrectly handled memory allocations for certain large encrypted attachments. This caused Thunderbird to crash and thus caused the entire message to be inaccessible.