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7.5High KEV

CVE-2018-0159Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability

Cisco IOS and IOS XE Published: (8 years ago)

Known exploited — Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability

CISA confirmed this vulnerability is used in real attacks on 03.03.2022. Remediation deadline for US federal agencies: 17.03.2022.

Required action: Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2018-0159

Description

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 by sending crafted IKEv1 packets to an affected device during an IKE negotiation. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuj73916.

Weakness (CWE): CWE-20

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
cisco ios 15.3(3)s
cisco ios xe 15.3(3)s
— Cisco IOS and IOS XE Cisco IOS and IOS XE

References and patches

CPE matches (NVD) (2)
  • cpe:2.3:o:cisco:ios:15.3\(3\)s:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:15.3\(3\)s:*:*:*:*:*:*:*

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