What’s Vulnerable › Vulnerabilities

CVE-2018-17540

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-10-03 · updated 2026-06-17
• Weakness: CWE-119

Description

The gmp plugin in strongSwan before 5.7.1 has a Buffer Overflow via a crafted certificate.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04
• Debian Linux: 8.0, 9.0
• strongSwan: before 5.7.1 — fixed in 5.7.1

How to fix

Upgrade to a fixed version: strongSwan 5.7.1. 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-2018-17540/
• https://lists.debian.org/debian-lts-announce/2018/10/msg00001.html
• https://security.gentoo.org/glsa/201811-16
• https://usn.ubuntu.com/3774-1/
• https://www.debian.org/security/2018/dsa-4309
• https://www.strongswan.org/blog/2018/10/01/strongswan-vulnerability-%28cve-2018-17540%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

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