Referenced CVEs: 
CVE-2006-6169, CVE-2006-6235
Description: 
=========================================================== Ubuntu Security Notice USN-393-2 December 07, 2006 gnupg2 vulnerabilities CVE-2006-6169, CVE-2006-6235 =========================================================== A security issue affects the following Ubuntu releases: 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 6.10: gnupg2 1.9.21-0ubuntu5.2 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: USN-389-1 and USN-393-1 fixed vulnerabilities in gnupg. This update provides the corresponding updates for gnupg2. Original advisory details: A buffer overflow was discovered in GnuPG. By tricking a user into running gpg interactively on a specially crafted message, an attacker could execute arbitrary code with the user's privileges. This vulnerability is not exposed when running gpg in batch mode. (CVE-2006-6169) Tavis Ormandy discovered that gnupg was incorrectly using the stack. If a user were tricked into processing a specially crafted message, an attacker could execute arbitrary code with the user's privileges. (CVE-2006-6235)