The _rl_tropen function in util.c in GNU readline before 6.3 patch 3 allows local users to create or overwrite arbitrary files via a symlink attack on a /var/tmp/rltrace.[PID] file.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-2524
• https://bugzilla.redhat.com/show_bug.cgi?id=1077023
• https://lists.fedoraproject.org/pipermail/package-announce/2014-July/135686.html
• http://advisories.mageia.org/MGASA-2014-0319.html
• http://lists.gnu.org/archive/html/bug-readline/2014-03/msg00057.html
• http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00037.html
• http://seclists.org/oss-sec/2014/q1/579
• http://seclists.org/oss-sec/2014/q1/587
• http://www.mandriva.com/security/advisories?name=MDVSA-2014:154
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:132