CVE-2018-0159 on CISA KEV

A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition.

01What CISA says about this vulnerability

A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of specific IKEv1 packets. An attacker could exploit this vulnerability…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• www.securityfocus.com — http://www.securityfocus.com/bid/103562
• www.securitytracker.com — http://www.securitytracker.com/id/1040595
• tools.cisco.com — https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

06Detection

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