What’s Vulnerable › Vulnerabilities

CVE-2015-3204

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-07-01 · updated 2026-06-17
• Weakness: CWE-20

Description

libreswan 3.9 through 3.12 allows remote attackers to cause a denial of service (daemon restart) via an IKEv1 packet with (1) unassigned bits set in the IPSEC DOI value or (2) the next payload value set to ISAKMP_NEXT_SAK.

Affected products

• The Libreswan Project libreswan: 3.9, 3.10, 3.11, 3.12

References

• http://rhn.redhat.com/errata/RHSA-2015-1154.html
• http://www.securityfocus.com/bid/75392
• https://libreswan.org/security/CVE-2015-3204/CVE-2015-3204.txt
• https://security.gentoo.org/glsa/201603-13
• http://rhn.redhat.com/errata/RHSA-2015-1154.html
• http://www.securityfocus.com/bid/75392
• https://libreswan.org/security/CVE-2015-3204/CVE-2015-3204.txt
• https://security.gentoo.org/glsa/201603-13

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