Overview
The Cisco Adaptive Security Appliance contains a memory exhaustion vulnerability that may occur when the DHCP service relay is enabled.
Description
The Cisco Adaptive Security Appliance (ASA) is firewall that includes routing and intrusion prevention system (IPS) features. DHCP relay allows network devices to forward DHCP broadcast packets from a network segment that does not have a DHCP server to one that does. The Cisco ASA supports DHCP relay. The Cisco ASA DHCP relay service contains a memory exhaustion vulnerability. An attacker may trigger the vulnerability by sending a large number of DHCP requests to a vulnerable system. |
Impact
An unauthenticated attacker may be able to create a denial-of-service condition. |
Solution
Update |
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Vendor Information
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | 0 | AV:--/AC:--/Au:--/C:--/I:--/A:-- |
| Temporal | 0 | E:ND/RL:ND/RC:ND |
| Environmental | 0 | CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND |
References
- http://www.cisco.com/en/US/products/ps6120/index.html
- http://www.cisco.com/pcgi-bin/Support/Bugtool/onebug.pl?bugid=CSCsh50277
- http://www.cisco.com/en/US/products/ps6120/products_configuration_guide_chapter09186a0080636f31.html
- http://en.wikipedia.org/wiki/Intrusion-prevention_system
- http://www.cisco.com/warp/public/707/cisco-sr-20070502-pix.shtml
Acknowledgements
This vulnerability was discovered by Lisa Sittler and Grant Deffenbaugh of CERT/CC.
This document was written by Ryan Giobbi.
Other Information
| CVE IDs: | None |
| Severity Metric: | 0.64 |
| Date Public: | 2007-05-02 |
| Date First Published: | 2007-05-02 |
| Date Last Updated: | 2007-05-03 20:24 UTC |
| Document Revision: | 29 |