From drobbins@gentoo.org Thu Dec 4 19:25:22 2003 From: Daniel Robbins To: gentoo-announce@gentoo.org, bugtraq@securityfocus.com, lwn@lwn.net Date: Thu, 04 Dec 2003 13:13:15 -0700 Subject: GLSA: exploitable heap overflow in rsync (200312-03) - --------------------------------------------------------------------------- GENTOO LINUX SECURITY ANNOUNCEMENT 200312-03 - --------------------------------------------------------------------------- GLSA: 200312-03 summary: exploitable heap overflow in rsync severity: high date: 2003-12-04 exploit: remote affected: <2.5.6* fixed: >=2.5.7 DESCRIPTION: Rsync version 2.5.6 contains a vulnerability that can be used to run arbitrary code. The Gentoo infrastructure team has some reasonably good forensic evidence that this exploit may have been used in combination with the Linux kernel brk vulnerability (see GLSA 200312-02) to exploit a rsync.gentoo.org rotation server (see GLSA-200312-01.) Please see http://lwn.net/Articles/61541/ for the security advisory released by the rsync development team. SOLUTION: To address this vulnerability, all Gentoo users should: Read GLSA-200312-02 and ensure that all systems are upgraded to a version of the Linux kernel without the brk vulnerability Upgrade to version 2.5.7 of rsync. This can be done by typing: emerge sync; emerge >=net-misc/rsync-2.5.7 Review your /etc/rsyncd.conf configuration file; ensure that the use chroot="no" command is commented out or removed, or change use chroot="no" to use chroot="yes". Then, if necessary, restart rsyncd by typing: /etc/init.d/rsyncd restart //end [ Part 2, "This is a digitally signed message part" ] [ Application/PGP-SIGNATURE 196bytes. ] [ Unable to print this part. ]