cisco-sa-20191002-asa-ospf-lsa-dos: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software OSPF LSA Processing Denial of Service Vulnerability
First published: Wed Oct 02 2019(Updated: )
A vulnerability in the Open Shortest Path First (OSPF) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software improperly parses certain options in OSPF link-state advertisement (LSA) type 11 packets. An attacker could exploit this vulnerability by sending a crafted LSA type 11 OSPF packet to an affected device. A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition for client traffic that is traversing the device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-asa-ospf-lsa-dos
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco ASA Software | =9.12<9.12.2.1=9.10<9.10.1.27>=9.7=9.8<=9.9<9.9.2.59>=Earlier than 9.4=9.4=9.5<=9.6<9.6.4.34 | 9.12.2.1 9.10.1.27 9.9.2.59 9.6.4.34 |
| Cisco FTD Software | >=Earlier than 6.1.0=6.1.0=6.2.0=6.2.1=6.2.2<=6.2.3<6.2.3.15 | 6.2.3.15 |
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Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-20191002-asa-ospf-lsa-dos?
The severity of cisco-sa-20191002-asa-ospf-lsa-dos is rated as high with a score of 7.4.
How do I fix cisco-sa-20191002-asa-ospf-lsa-dos?
To fix cisco-sa-20191002-asa-ospf-lsa-dos, you should upgrade your Cisco ASA Software or Cisco FTD Software to the recommended versions.
Which devices are affected by cisco-sa-20191002-asa-ospf-lsa-dos?
cisco-sa-20191002-asa-ospf-lsa-dos affects Cisco ASA Software versions earlier than 9.12.2.1 and 9.10.1.27, as well as Cisco FTD Software versions earlier than 6.2.3.15.
What is the impact of cisco-sa-20191002-asa-ospf-lsa-dos?
The impact of cisco-sa-20191002-asa-ospf-lsa-dos is a denial of service (DoS) which could cause a reload of the affected device.
Who can exploit cisco-sa-20191002-asa-ospf-lsa-dos?
An unauthenticated, adjacent attacker can exploit cisco-sa-20191002-asa-ospf-lsa-dos.
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