CVEvulnerability
CVE-2018-0158
CISA Known Exploited Vulnerability
Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability — Cisco IOS Software and Cisco IOS XE Software
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.
- Added to KEV
- 2022-03-03
- Remediation due
- 2022-03-17
- Ransomware use
- Unknown
- Required action
- Apply updates per vendor instructions.
- Notes
- https://nvd.nist.gov/vuln/detail/CVE-2018-0158
- Status
- Analyzed
- Published
- 2018-03-28
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-20, CWE-401
Description
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device to be processed. A successful exploit could cause an affected device to continuously consume memory and eventually reload, resulting in a DoS condition. Cisco Bug IDs: CSCvf22394.
Affected configurations
• cisco ios 15.5\(3\)s1.1
• cisco ios 15.5\(3\)s1.2
• cisco ios 15.5\(3\)s1.4
• cisco ios 15.5\(3\)s1.5
• cisco ios 15.5\(3\)s1.7
• cisco ios 15.5\(3\)s1.8
• cisco ios 15.5\(3\)s1.9
• cisco ios 15.5\(3\)s1.10
• cisco ios 15.5\(3\)s1.11
• cisco ios 15.5\(3\)s1.12
• cisco ios xe 15.5\(3\)s1.1
• cisco ios xe 15.5\(3\)s1.2
• cisco ios xe 15.5\(3\)s1.4
• cisco ios xe 15.5\(3\)s1.5
• cisco ios xe 15.5\(3\)s1.7
• cisco ios xe 15.5\(3\)s1.8
• cisco ios xe 15.5\(3\)s1.9
• cisco ios xe 15.5\(3\)s1.10
• cisco ios xe 15.5\(3\)s1.11
• cisco ios xe 15.5\(3\)s1.12
Related
References
- http://www.securityfocus.com/bid/103566 Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040595 Broken Link, Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03 Third Party Advisory, US Government Resource, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 Third Party Advisory, US Government Resource, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike Vendor Advisory
- http://www.securityfocus.com/bid/103566 Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040595 Broken Link, Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03 Third Party Advisory, US Government Resource, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 Third Party Advisory, US Government Resource, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0158 US Government Resource