CVE-2011-2527 - Tricksier Caps

Description

The change_process_uid function in os-posix.c in Qemu 0.14.0 and earlier does not properly drop group privileges when the -runas option is used which allows local guest users to access restricted files on the host.

Reference

http://www.openwall.com/lists/oss-security/2011/07/12/15 http://ubuntu.com/usn/usn-1177-1 http://secunia.com/advisories/47992 https://bugs.launchpad.net/qemu/+bug/807893 http://www.openwall.com/lists/oss-security/2011/07/12/5 http://secunia.com/advisories/47157 http://secunia.com/advisories/45188 http://www.osvdb.org/74752 http://www.securityfocus.com/bid/48659 http://secunia.com/advisories/45187 http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081972.html http://lists.opensuse.org/opensuse-updates/2012-02/msg00009.html http://secunia.com/advisories/45419 http://rhn.redhat.com/errata/RHSA-2011-1531.html https://www.debian.org/security/2011/dsa-2282 https://exchange.xforce.ibmcloud.com/vulnerabilities/68539