RedhatCVELIST:CVE-2011-1011CVE-2011-1011
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.
References
archives.neohapsis.com/archives/fulldisclosure/2011-02/0585.html
lists.fedoraproject.org/pipermail/package-announce/2011-March/056227.html
openwall.com/lists/oss-security/2011/02/23/1
openwall.com/lists/oss-security/2011/02/23/2
pkgs.fedoraproject.org/gitweb/?p=policycoreutils.git%3Ba=blob%3Bf=policycoreutils-rhat.patch%3Bh=d4db5bc06027de23d12a4b3f18fa6f9b1517df27%3Bhb=HEAD#l2197
secunia.com/advisories/43415
secunia.com/advisories/43844
secunia.com/advisories/44034
www.redhat.com/support/errata/RHSA-2011-0414.html
www.securityfocus.com/bid/46510
www.securitytracker.com/id?1025291
www.vupen.com/english/advisories/2011/0701
www.vupen.com/english/advisories/2011/0864
bugzilla.redhat.com/show_bug.cgi?id=633544
exchange.xforce.ibmcloud.com/vulnerabilities/65641
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