Vulnerability · Published Jun 3, 2020 · Assigned by cisco

CVE-2020-3230Cisco IOS and IOS XE Software Internet Key Exchange Version 2 Denial of Service Vulnerability

High 7.5

In plain English

A high-severity improper input validation in Cisco IOS 15.1(2)T from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).

Severity (CVSS 3.0)7.5High

Exploit odds (30 days)1.7%top 22.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) implementation in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent IKEv2 from establishing new security associations. The vulnerability is due to incorrect handling of crafted IKEv2 SA-Init packets. An attacker could exploit this vulnerability by sending crafted IKEv2 SA-Init packets to the affected device. An exploit could allow the attacker to cause the affected device to reach the maximum incoming negotiation limits and prevent further IKEv2 security associations from being formed.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS 15.1(2)T	n/a

Weakness: CWE-20 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

20200603 Cisco IOS and IOS XE Software Internet Key Exchange Version 2 Denial of Service Vulnerability vendor-advisory, x_refsource_CISCO