Cisco IOS contains a flaw that may allow a remote denial of service. The issue is triggered when CallManager Express fails to properly handle SIP TRUNK traffic containing rate bursts and 'peculiar' request sizes, allowing a remote attacker to cause a memory consumption denial of service by sending this traffic over a long duration.
Classification
Location:
Remote / Network Access
Attack Type:
Denial of Service
Impact:
Loss of Availability
Solution:
Upgrade
Exploit:
Exploit Unknown
Disclosure:
Vendor Verified
Solution
Upgrade to version 15.0(1)XA1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.
