CVE-2017-6770
Cisco IOS 12.0 through 15.6, Adaptive Security Appliance (ASA) Software 7.0.1 through 9.7.1.2, NX-OS 4.0 through 12.0, and IOS XE 3.6 through 3.18 are affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State…
Does this matter?
Lower severity and a low EPSS score (1.69%). Track it; it rarely justifies an emergency change on its own.
Description
Cisco IOS 12.0 through 15.6, Adaptive Security Appliance (ASA) Software 7.0.1 through 9.7.1.2, NX-OS 4.0 through 12.0, and IOS XE 3.6 through 3.18 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, remote attacker to take full control of the OSPF Autonomous System (AS) domain routing table, allowing the attacker to intercept or black-hole traffic. The attacker could exploit this vulnerability by injecting crafted OSPF packets. Successful exploitation could cause the targeted router to flush its routing table and propagate 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 OSPF 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 Bug IDs: CSCva74756, CSCve47393, CSCve47401.
- CVSS 3.1
- 4.2 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
- EPSS
- 1.69% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- cisco/nx-os · cisco/nx-os for nexus 5500 platform switches · cisco/nx-os for nexus 5600 platform switches · cisco/nx-os for nexus 7700 series switches · cisco/adaptive security appliance software · cisco/ios · cisco/ios xe
- Source
- psirt@cisco.com
References
- http://www.securityfocus.com/bid/100005Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039005Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039006Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039007Third Party Advisory, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170727-ospfVendor Advisory
- http://www.securityfocus.com/bid/100005Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039005Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039006Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039007Third Party Advisory, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170727-ospfVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.