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Cisco IOS XE Software and Cisco ASA 5500-X Series Adaptive Security Appliance IPsec Denial of Service Vulnerability

cisco-sa-20180926-ipsec · High · Published · Updated

A vulnerability in the IPsec driver code of multiple Cisco IOS XE Software platforms and the Cisco ASA 5500-X Series Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to improper processing of malformed IPsec Authentication Header (AH) or Encapsulating Security Payload (ESP) packets. An attacker could exploit this vulnerability by sending malformed IPsec packets to be processed by an affected device. An exploit could allow the attacker to cause a reload of the affected 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-20180926-ipsec This advisory is part of the September 26, 2018, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 12 Cisco Security Advisories that describe 13 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: September 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.

Cisco advisory ·CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2018-0472
Cisco Bug IDsCSCvi30496, CSCvh04189, CSCvg37952, CSCvh04591, CSCvf73114
CVSS ScoreBase 8.6
Base 8.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
Product Names From Source
Cisco ASA with FirePOWER Services, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.1, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.1.1, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.2, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.2.2, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.3, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.5, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.3.1, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.3.2, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.3.5, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.3.6, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.3.9, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.3.10, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.3.3.11, Cisco 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