What’s Vulnerable › Vulnerabilities

CVE-2018-10811

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-06-19 · updated 2026-06-17
• Weakness: CWE-909

Description

strongSwan 5.6.0 and older allows Remote Denial of Service because of Missing Initialization of a Variable.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04
• Debian Linux: 8.0, 9.0
• Fedoraproject Fedora: 28
• strongSwan: from 5.0.1 before 5.6.3 — fixed in 5.6.3

How to fix

Upgrade to a fixed version: strongSwan 5.6.3. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html
• https://download.strongswan.org/security/CVE-2018-10811/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBO6ZQKLB5RY3TV7MXADFTQKXA2LUEIL/
• https://security.gentoo.org/glsa/201811-16
• https://usn.ubuntu.com/3771-1/
• https://www.debian.org/security/2018/dsa-4229
• https://www.strongswan.org/blog/2018/05/28/strongswan-vulnerability-%28cve-2018-10811%29.html
• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html

Get alerted when CVE-2018-10811 or the next vulnerability affects your stack