Technical Description

A vulnerability has been identified in Cisco Unified Communications Manager, which could be exploited by attackers or malicious users to gain elevated privileges. This issue is caused due to CUCM sending Directory Manager password and TabSyncSysUser (axl user) password in clear from client when using the IP Phone Personal Address Book (PAB) Synchronizer feature, which may allow an attacker to intercept user credentials and and obtain complete administrative access to a vulnerable system, or gain access to additional systems configured to use the directory service for authentication when CUCM is integrated with an external directory service.

Affected Products

Cisco Unified CallManager versions 4.1
Cisco Unified Communications Manager versions prior to 4.2(3)SR4b
Cisco Unified Communications Manager versions prior to 4.3(2)SR1b
Cisco Unified Communications Manager versions prior to 5.1(3e)
Cisco Unified Communications Manager versions prior to 6.1(3)
Cisco Unified Communications Manager versions prior to 7.0(2)

Solution

Upgrade to Cisco Unified Communications Manager software version 4.2(3)SR4b, 4.3(2)SR1b, 5.1(3e), 6.1(3) or 7.0(2) :
http://www.cisco.com/warp/public/707/cisco-sa-20090311-cucmpab.shtml

References

http://www.vupen.com/english/advisories/2009/0675
http://www.cisco.com/warp/public/707/cisco-sa-20090311-cucmpab.shtml

Credits

Vulnerability reported by Olivier Grosjeanne (Dimension Data France) Oliver Dewdney (LBI).

ChangeLog

2009-03-11 : Initial release

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