CVE-2011-1011 Information

Description

The seunshare_mount function in sandbox/seunshare.c in seunshare in certain Red Hat packages of policycoreutils 2.0.83 and earlier in Red Hat Enterprise Linux (RHEL) 6 and earlier and Fedora 14 and earlier mounts a new directory on top of /tmp without assigning root ownership and the sticky bit to this new directory which allows local users to replace or delete arbitrary /tmp files and consequently cause a denial of service or possibly gain privileges by running a setuid application that relies on /tmp as demonstrated by the ksu application.

Reference

http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0585.html http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056227.html http://openwall.com/lists/oss-security/2011/02/23/1 http://openwall.com/lists/oss-security/2011/02/23/2 http://pkgs.fedoraproject.org/gitweb/?p=policycoreutils.git;a=blob;f=policycoreutils-rhat.patch;h=d4db5bc06027de23d12a4b3f18fa6f9b1517df27;hb=HEADl2197 http://secunia.com/advisories/43415 http://secunia.com/advisories/43844 http://secunia.com/advisories/44034 http://www.redhat.com/support/errata/RHSA-2011-0414.html http://www.securityfocus.com/bid/46510 http://www.securitytracker.com/id?1025291 http://www.vupen.com/english/advisories/2011/0701 http://www.vupen.com/english/advisories/2011/0864 https://bugzilla.redhat.com/show_bug.cgi?id=633544 https://exchange.xforce.ibmcloud.com/vulnerabilities/65641