All users of Cisco Secure PIX Firewalls with software versions 4.0 up
to and including 4.4(8), 5.0(3), 5.1(3), 5.2(2), and 5.3(1) with configurations
using AAA authentication are at risk.
Affected configurations will have configuration lines that begin:
pixfirewall# aaa authentication ...
Configurations not including aaa
authentication are not affected. PIX
Firewall software versions 6.0(1) and later are not affected.
The IOS Firewall feature set is not affected by the above defect.
No other Cisco products are currently known to be affected by these