GNOME Display Manager (gdm) 2.x before 2.32.1 allows local users to change the ownership of arbitrary files via a symlink attack on a (1) dmrc or (2) face icon file under /var/cache/gdm/.

References

• https://nvd.nist.gov/vuln/detail/CVE-2011-0727
• https://bugzilla.redhat.com/show_bug.cgi?id=688323
• https://exchange.xforce.ibmcloud.com/vulnerabilities/66377
• http://ftp.gnome.org/pub/GNOME/sources/gdm/2.32/gdm-2.32.1.news
• http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057333.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057931.html
• http://mail.gnome.org/archives/gdm-list/2011-March/msg00020.html
• http://secunia.com/advisories/43714
• http://secunia.com/advisories/43854
• http://secunia.com/advisories/44021
• http://securitytracker.com/id?1025264
• http://www.debian.org/security/2011/dsa-2205
• http://www.mandriva.com/security/advisories?name=MDVSA-2011:070
• http://www.redhat.com/support/errata/RHSA-2011-0395.html
• http://www.securityfocus.com/bid/47063
• http://www.ubuntu.com/usn/USN-1099-1
• http://www.vupen.com/english/advisories/2011/0786
• http://www.vupen.com/english/advisories/2011/0787
• http://www.vupen.com/english/advisories/2011/0797
• http://www.vupen.com/english/advisories/2011/0847
• http://www.vupen.com/english/advisories/2011/0911