7.5
High
Exploited
CVE-2018-0159 Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Not observed so far
Weakness
CWE-20
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS and IOS XE | Versions not published |
References
- 103562 www.securityfocus.com
- 1040595 www.securitytracker.com
- tools.cisco.com tools.cisco.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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