Cisco CallManager Multiple Failed Logins Remote Denial Of Service Vulnerability

BID:14253

Info

Cisco CallManager Multiple Failed Logins Remote Denial Of Service Vulnerability

Bugtraq ID: 14253
Class: Design Error
CVE:
Remote: Yes
Local: No
Published: Jul 12 2005 12:00AM
Updated: Jul 12 2005 12:00AM
Credit: The vendor disclosed this vulnerability.
Vulnerable: Cisco Call Manager 4.0
Cisco Call Manager 3.3 (3)
Cisco Call Manager 3.3
Cisco Call Manager 3.2
+ Cisco VoIP Phone 7902G 0
+ Cisco VoIP Phone 7905G 0
+ Cisco VoIP Phone 7912G 0
Cisco Call Manager 3.1 (3a)
Cisco Call Manager 3.1 (2)
Cisco Call Manager 3.1
Cisco Call Manager 3.0
Cisco Call Manager 2.0
Cisco Call Manager 1.0
Not Vulnerable: Cisco Call Manager 4.1 (3)SR1
Cisco Call Manager 4.1 (3)ES07
Cisco Call Manager 4.1 (2)ES33
Cisco Call Manager 4.0 (2a)SR2b
Cisco Call Manager 4.0 (2a)ES40
Cisco Call Manager 3.3 (5)
Cisco Call Manager 3.3 (4)ES25
Cisco Call Manager 3.3 (3)ES61

Discussion

Cisco CallManager Multiple Failed Logins Remote Denial Of Service Vulnerability

CallManager is susceptible to a remote denial of service vulnerability when MLA (Multi Level Admin) is enabled.

This issue is documented in Cisco bug CSCef47060, which is available to Cisco customers.

Attackers may exploit this vulnerability by repeatedly attempting, and failing, to log into the affected service. It is reported that as much as 750 megabytes of memory may be consumed, resulting in a sever reduction in performance, possibly denying service to legitimate users.

This issue was originally documented in BID 14227.

Exploit / POC

Cisco CallManager Multiple Failed Logins Remote Denial Of Service Vulnerability

No exploit is required.

Solution / Fix

Cisco CallManager Multiple Failed Logins Remote Denial Of Service Vulnerability

Solution:
Cisco has released an advisory, along with fixes to address this, and other issues. Please see the referenced advisory for further details, and information on obtaining fixes.

References

Cisco CallManager Multiple Failed Logins Remote Denial Of Service Vulnerability

References:

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