Cisco CallManager and OpenSER SIP call hijacking
| callmanager-openser-sip-call-hijacking (37197) |  Medium Risk |
Description:
Cisco CallManager and OpenSER could allow a remote attacker to hijack calls, caused by the improper handling of SIP messages. By sending a specially-crafted request for a URI containing a sniffed authentication header, a remote attacker who can sniff the traffic could exploit this vulnerability to hijack the victim's call.
*CVSS:
| Base Score: | 5.8 |
| Access Vector: | Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | None |
| Temporal Score: | 4.3 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
For OpenSER:
Apply the fix for this vulnerability, available from the OpenSER SVN Repository. See References.
References:
- Cisco Web site: Cisco CallManager.
- Full-Disclosure Mailing List, Fri Oct 12 2007 - 11:54:18 CDT: CallManager and OpeSer toll fraud and authentication forward attack.
- OpenSER SVN Repository: OpenSER.
- OpenSER Web site: OpenSER.
- BID-26057: Cisco CallManager and Openser SIP Remote Unauthorized Access Vulnerability
- CVE-2007-5468: Cisco CallManager 5.1.1.3000-5 does not verify the Digest authentication header URI against the Request URI in SIP messages, which allows remote attackers to use sniffed Digest authentication credentials to call arbitrary telephone numbers or spoof caller ID (aka toll fraud and authentication forward attack).
- SA27204: OpenSER Authentication Header Hijacking Security Issue
- SA27231: Cisco CallManager Authentication Header Hijacking Security Issue
- VUPEN/ADV-2007-3534: Cisco CallManager Digest Authentication Header Security Bypass Issue
Platforms Affected:
- Cisco CallManager 5.1.1.3000.5
Reported:
Oct 12, 2007
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.