A NULL pointer dereference flaw was found in the way Asterisk handled INFO requests, when the 'automon' feature was enabled. If no channel had been created yet, a remote attacker could use this flaw to cause a denial of service (asterisk crash) by sending an INFO request.
Upstream patch (for 1.8 branch):
This issue affects the versions of the asterisk package, as shipped with Fedora release of 15 and 16. Please schedule an update.
This issue affects the version of the asterisk package, as shipped with Fedora EPEL 6. Please schedule an update.
Created asterisk tracking bugs for this issue
Affects: fedora-all [bug 765778]
Affects: epel-6 [bug 765779]
This was assigned the name CVE-2011-4598.
asterisk-22.214.171.124-1.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.