Several memory leak flaws were found in Exim. A local attacker who has access to run the exim binary could use this flaw to escalate his privilege to root.
Created attachment 1284052 [details]
Upstream proposed patch
Exim itself is not vulnerable to privilege escalation, but this particular flaw in exim can be used by the stackguard vulnerability (https://access.redhat.com/security/vulnerabilities/stackguard) to achieve privilege escalation.
Created exim tracking bugs for this issue:
Affects: fedora-all [bug 1463539]
Affects: epel-6 [bug 1463540]
Affects: epel-7 [bug 1463541]