CVE-2018-0273 - A vulnerability in the IPsec Manager of Cisco StarOS for Cisco Aggregation Services Router (ASR) 500

CVE-2018-0273

Summary

A vulnerability in the IPsec Manager of Cisco StarOS for Cisco Aggregation Services Router (ASR) 5000 Series Routers and Virtualized Packet Core (VPC) System Software could allow an unauthenticated, remote attacker to terminate all active IPsec VPN tunnels and prevent new tunnels from being established, resulting in a denial of service (DoS) condition. The vulnerability is due to improper processing of corrupted Internet Key Exchange Version 2 (IKEv2) messages. An attacker could exploit this vulnerability by sending crafted IKEv2 messages toward an affected router. A successful exploit could allow the attacker to cause the ipsecmgr service to reload. A reload of this service could cause all IPsec VPN tunnels to be terminated and prevent new tunnels from being established until the service has restarted, resulting in a DoS condition. This vulnerability affects the following Cisco products when they are running Cisco StarOS: Cisco Aggregation Services Router (ASR) 5000 Series Routers, Virtualized Packet Core (VPC) System Software. Cisco Bug IDs: CSCve29605.

References

Vulnerable Configurations

cpe:2.3:o:cisco:staros:19.4.2.65120:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:19.4.2.65120:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:19.6.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:19.6.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.2.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.2.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.2.6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.2.6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.4.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.4.0:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5700:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5700:-:*:*:*:*:*:*:*

CVSS

Base:	5.0 (as of 09-10-2019 - 23:31)
Impact:
Exploitability:

CWE

NVD-CWE-noinfo

CAPEC

Access

Vector	Complexity	Authentication
NETWORK	LOW	NONE

Impact

Confidentiality	Integrity	Availability
NONE	NONE	PARTIAL

cvss-vector via4

AV:N/AC:L/Au:N/C:N/I:N/A:P

refmap via4

bid	103935
confirm	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-starosasr
sectrack	1040721

Last major update

09-10-2019 - 23:31

Published

19-04-2018 - 20:29

Last modified

09-10-2019 - 23:31