FreeRADIUS is vulnerable to a heap exploit and a NULL pointer dereference vulnerability.
|Package||net-dialup/freeradius on all architectures|
|Affected versions||<= 0.9.2|
|Unaffected versions||>= 0.9.3|
FreeRADIUS is a popular open source RADIUS server.
FreeRADIUS versions below 0.9.3 are vulnerable to a heap exploit, however, the attack code must be in the form of a valid RADIUS packet which limits the possible exploits.
Also corrected in the 0.9.3 release is another vulnerability which causes the RADIUS server to de-reference a NULL pointer and crash when an Access-Request packet with a Tunnel-Password is received.
A remote attacker could craft a RADIUS packet which would cause the RADIUS server to crash, or could possibly overflow the heap resulting in a system compromise.
There is no known workaround at this time.
Users are encouraged to perform an 'emerge sync' and upgrade the package to the latest available version - 0.9.3 is available in portage and is marked as stable.
# emerge sync # emerge -pv '>=net-dialup/freeradius-0.9.3' # emerge '>=net-dialup/freeradius-0.9.3' # emerge clean
November 23, 2003
November 23, 2003: 01