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CVE-2020-3230

HIGHCVSS 7.5/10EPSS 1.67%

Last modified

CVE-2020-3230 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.67% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
1.67%

73.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos12.2\(6\)i1
CiscoIos15.0\(2\)ej
CiscoIos15.0\(2\)ej1
CiscoIos15.0\(2\)ek
CiscoIos15.0\(2\)ek1
CiscoIos15.0\(2\)ex
CiscoIos15.0\(2\)ex1
CiscoIos15.0\(2\)ex2
CiscoIos15.0\(2\)ex3
CiscoIos15.0\(2\)ex4
CiscoIos15.0\(2\)ex5
CiscoIos15.0\(2\)ex6
CiscoIos15.0\(2\)ex7
CiscoIos15.0\(2\)ex8
CiscoIos15.0\(2\)ey
CiscoIos15.0\(2\)ey1
CiscoIos15.0\(2\)ey2
CiscoIos15.0\(2\)ey3
CiscoIos15.0\(2\)ez
CiscoIos15.0\(2\)se
CiscoIos15.0\(2\)se1
CiscoIos15.0\(2\)se2
CiscoIos15.0\(2\)se3
CiscoIos15.0\(2\)se4
CiscoIos15.0\(2\)se5
CiscoIos15.0\(2\)se6
CiscoIos15.0\(2\)se7
CiscoIos15.0\(2\)se8
CiscoIos15.0\(2\)se9
CiscoIos15.0\(2\)se10
CiscoIos15.0\(2\)se10a
CiscoIos15.0\(2\)se11
CiscoIos15.0\(2\)se12
CiscoIos15.0\(2a\)ex5
CiscoIos15.0\(2a\)se9
CiscoIos15.1\(1\)s
CiscoIos15.1\(1\)s1
CiscoIos15.1\(1\)s2
CiscoIos15.1\(1\)sg
CiscoIos15.1\(1\)sg1
CiscoIos15.1\(1\)sg2
CiscoIos15.1\(1\)sy
CiscoIos15.1\(1\)sy1
CiscoIos15.1\(1\)sy2
CiscoIos15.1\(1\)sy3
CiscoIos15.1\(1\)sy4
CiscoIos15.1\(1\)sy5
CiscoIos15.1\(1\)sy6
CiscoIos15.1\(1\)t
CiscoIos15.1\(1\)t1

Showing 50 of 792 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2020-3230?
CVE-2020-3230 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3230?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3230?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST