=========================================================== Ubuntu Security Notice USN-222-2 December 12, 2005 perl vulnerability CVE-2005-3962 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 4.10 (Warty Warthog) Ubuntu 5.04 (Hoary Hedgehog) Ubuntu 5.10 (Breezy Badger) The following packages are affected: libperl5.8 perl-base The problem can be corrected by upgrading the affected package to version 5.8.4-2ubuntu0.6 (for Ubuntu 4.10), 5.8.4-6ubuntu1.2 (for Ubuntu 5.04), or 5.8.7-5ubuntu1.2 (for Ubuntu 5.10). In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: USN-222-1 fixed a vulnerability in the Perl interpreter. It was discovered that the version of USN-222-1 was not sufficient to handle all possible cases of malformed input that could lead to arbitrary code execution, so another update is necessary. Original advisory: Jack Louis of Dyad Security discovered that Perl did not sufficiently check the explicit length argument in format strings. Specially crafted format strings with overly large length arguments led to a crash of the Perl interpreter or even to execution of arbitrary attacker-defined code with the privileges of the user running the Perl program. However, this attack was only possible in insecure Perl programs which use variables with user-defined values in string interpolations without checking their validity. Updated packages for Ubuntu 4.10: Source archives: http://security.ubuntu.com/ubuntu/pool/main/p/perl/perl_5.8.4-2ubuntu0.6.diff.gz Size/MD5: 65287 5b3e19646e2091eb9294220d0f7db14f http://security.ubuntu.com/ubuntu/pool/main/p/perl/perl_5.8.4-2ubuntu0.6.dsc Size/MD5: 727 f56ec1862af2a154066ea04d950ae74c http://security.ubuntu.com/ubuntu/pool/main/p/perl/perl_5.8.4.orig.tar.gz Size/MD5: 12094233 912050a9cb6b0f415b76ba56052fb4cf Architecture independent packages: http://security.ubuntu.com/ubuntu/pool/universe/p/perl/libcgi-fast-perl_5.8.4-2ubuntu0.6_all.deb Size/MD5: 37120 34c8f6b057066ed0b5e07ac1a4b783b6 http://security.ubuntu.com/ubuntu/pool/main/p/perl/perl-doc_5.8.4-2ubuntu0.6_all.deb Size/MD5: 7049588 2e0dedeaf0d5ebb7f5db7b0fc7885993 http://security.ubuntu.com/ubuntu/pool/main/p/perl/perl-modules_5.8.4-2ubuntu0.6_all.deb Size/MD5: 2181262 d51dcf8f5d749b48a95111e334e19e40 amd64 architecture (Athlon64, Opteron, EM64T Xeon) 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