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AUSCERT External Security Bulletin Redistribution
ESB-2013.1053
OSPF LSA Manipulation Vulnerability in Multiple Cisco Products
2 August 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco IOS Software
Cisco IOS-XE Software
Cisco Adaptive Security Appliance (ASA)
Cisco ASA Service Module (ASA-SM)
Cisco Pix Firewall
Cisco Firewall Services Module (FWSM)
Cisco NX-OS Software
Cisco ASR 5000
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2013-0149
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130801-lsaospf
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Cisco Security Advisory: OSPF LSA Manipulation Vulnerability in Multiple Cisco Products
Advisory ID: cisco-sa-20130801-lsaospf
Revision 1.0
For Public Release 2013 August 1 16:00 UTC (GMT)
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Summary
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Multiple Cisco products are affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. This vulnerability could allow an unauthenticated attacker to take full control of the OSPF Autonomous System (AS) domain routing table, blackhole traffic, and intercept traffic.
The attacker could trigger this vulnerability by injecting crafted OSPF packets. Successful exploitation could cause flushing of the routing table on a targeted router, as well as propagation of the crafted OSPF LSA type 1 update throughout the OSPF AS domain.
To exploit this vulnerability, an attacker must accurately determine certain parameters within the LSA database on the target router. This vulnerability can only be triggered by sending crafted unicast or multicast LSA type 1 packets. No other LSA type packets can trigger this vulnerability.
OSPFv3 is not affected by this vulnerability. Fabric Shortest Path First (FSPF) protocol is not affected by this vulnerability.
Cisco IOS-XE Software
Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130801-lsaospf
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