The web interface in CUPS 1.7.4 allows local users in the lp group to read arbitrary files via a symlink attack on a file in /var/cache/cups/rss/ and language[0] set to null. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-3537.
http://advisories.mageia.org/MGASA-2014-0313.html
http://rhn.redhat.com/errata/RHSA-2014-1388.html
http://secunia.com/advisories/60509
http://secunia.com/advisories/60787
http://www.debian.org/security/2014/dsa-2990
http://www.mandriva.com/security/advisories?name=MDVSA-2015:108
http://www.openwall.com/lists/oss-security/2014/07/22/13