Improper input validation in Cisco iOS 15.1(2)t
CVE-2020-3230
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.017 (74.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Cisco Ios 15.1(2)t — versions n/a
- Cisco Ios — versions 12.2\(6\)i1, 15.0\(2\)ej, 15.0\(2\)ej1
- Cisco Ios_xe — versions 3.3.0sg, 3.3.0xo, 3.3.1sg
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3230?
- CVE-2020-3230 is a high-severity vulnerability in Cisco iOS 15.1(2)t, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2020-06-03.
- How severe is CVE-2020-3230?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-3230 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.