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security advisorygentoobuffer overflow

Gentoo: 202311-10 High: OpenSSL Critical Vulnerability Alert

A bug in the getgrouplist function can cause a buffer overflow if the size ofthe group list is too small to hold all the user's groups. This overflow cancause segmentation faults in user applications. This vulnerability existsonly when an administrator has placed a user in a number of groups largerthan that expected by an application.. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------------- GENTOO LINUX SECURITY ANNOUNCEMENT 200311-05 - - --------------------------------------------------------------------------- GLSA: 200311-05 package: sys-libs/glibc summary: Glibc getgrouplist buffer overrun vulnerability severity: normal Gentoo bug: 33383 date: 2003-11-22 CVE: CAN-2003-0689 affected: =2.2.5 DESCRIPTION: A bug in the getgrouplist function can cause a buffer overflow if the size of the group list is too small to hold all the user's groups. This overflow can cause segmentation faults in user applications. This vulnerability exists only when an administrator has placed a user in a number of groups larger than that expected by an application. SOLUTION: It is recommended that all Gentoo Linux users update their systems as follows: emerge sync emerge '> =sys-libs/glibc-2.2.5' emerge clean - -- Andrea Barisani .*. Gentoo Linux Infrastructure Developer V ( ) GPG-Key 0xC9EE0905 ( ) 491D E9E0 3875 0EC9 10DD 150B CAA9 2C7D C9EE 0905 ^^_^^ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/wi7zyqksfcnuCQURAvuSAJ97zIRL9qlicQB6HYG2jjoQ1Y4SLwCaAg8w jqF5Mni+HSg5NhrUOnmOQek=MDV8 -----END PGP SIGNATURE----- . An exploit in Glibc could lead to significant application crashes on Gentoo systems. Timely updates are highly recommended.. Glibc Buffer Overflow,Gentoo Security,Group List Issue. . Severity: Critical. LinuxSecurity.com Team

Nov 24, 2003 •Critical Gentoo