It was discovered that a local user with privileges of group=lp can write symbolic links in the rss directory and use that to gain '@SYSTEM' group privilege with cupsd. Permissions: drwxrwxr-x. 2 root lp 4096 Jul 2 09:58 /var/cache/cups/rss SELinux mitigates this vulnerability
Acknowledgment: This issue was discovered by Francisco Alonso of the Red Hat Security Response Team.
Statement: This issue is not planned to be fixed in Red Hat Enterprise Linux 5 as it is now in Production 3 Phase of the support and maintenance life cycle, https://access.redhat.com/support/policy/updates/errata/
Patch for symlink: https://cups.org/strfiles.php/3363/str4450.patch Fixed In: 2.0-current (SVN: r11993) References: http://www.cups.org/blog.php?L724 https://cups.org/str.php?L4450
Created cups tracking bugs for this issue: Affects: fedora-all [bug 1119303]
cups-1.7.4-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.
This fix is insufficient, the additional check can be easily bypassed if language[0] is NULL. The CVE-2014-5029 id has been assigned for the incomplete fix. http://seclists.org/oss-sec/2014/q3/209
The incomplete fix CVE-2014-5029 is tracked via bug 1122600.
cups-1.6.4-10.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.
IssueDescription: It was discovered that CUPS allowed certain users to create symbolic links in certain directories under /var/cache/cups/. A local user with the 'lp' group privileges could use this flaw to read the contents of arbitrary files on the system or, potentially, escalate their privileges on the system.
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Via RHSA-2014:1388 https://rhn.redhat.com/errata/RHSA-2014-1388.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHBA-2015:0386 https://rhn.redhat.com/errata/RHBA-2015-0386.html