libreswan 3.9 through 3.12 allows remote attackers to cause a denial of service (daemon…
Priority LOW 28CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.02598 85th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libreswan:libreswan:3.9:*:*:*:*:*:*:* | 3.9 | Vulnerable | The Libreswan Project |
| cpe:2.3:a:libreswan:libreswan:3.10:*:*:*:*:*:*:* | 3.10 | Vulnerable | The Libreswan Project |
| cpe:2.3:a:libreswan:libreswan:3.11:*:*:*:*:*:*:* | 3.11 | Vulnerable | The Libreswan Project |
| cpe:2.3:a:libreswan:libreswan:3.12:*:*:*:*:*:*:* | 3.12 | Vulnerable | The Libreswan Project |
- cpe:2.3:a:libreswan:libreswan:3.9:*:*:*:*:*:*:* Versions 3.9 Vulnerable ·The Libreswan Project
- cpe:2.3:a:libreswan:libreswan:3.10:*:*:*:*:*:*:* Versions 3.10 Vulnerable ·The Libreswan Project
- cpe:2.3:a:libreswan:libreswan:3.11:*:*:*:*:*:*:* Versions 3.11 Vulnerable ·The Libreswan Project
- cpe:2.3:a:libreswan:libreswan:3.12:*:*:*:*:*:*:* Versions 3.12 Vulnerable ·The Libreswan Project
Remediation
Red Hat 1 advisory
- RHSA-2015:1154 Released 2015-06-23 · Red Hat rating Moderatelibreswan security, bug fix and enhancement update
- Red Hat Enterprise Linux Client (v. 7) libreswan-3.12-10.1.el7_1
- Red Hat Enterprise Linux Server (v. 7) libreswan-3.12-10.1.ael7b_1, libreswan-3.12-10.1.el7_1
- Red Hat Enterprise Linux Workstation (v. 7) libreswan-3.12-10.1.el7_1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2015:1154 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2015:1154 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2015:1154 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2015-3204
- 2026-10-03 Alias added: GHSA-52gh-6xp3-9wpf
References
More The Libreswan Project Libreswan vulnerabilities
- TI-2023-09114 Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and… CVSS 3.1MEDIUM 6.5
- TI-2013-05949 Race condition in the libreswan.spec files for Red Hat Enterprise Linux (RHEL) and Fedora… CVSS 2.0HIGH 9.3
- TI-2023-02152 Uncontrolled resource consumption in libreswan CVSS 3.1HIGH 7.5
- TI-2026-37395 IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload CVSS 3.1HIGH 8.1
- TI-2026-37394 IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload CVSS 3.1HIGH 8.1
- TI-2023-14401 pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and… CVSS 3.1HIGH 7.5
Sources
- CVE-2015-3204 · CVE Program
- CVE-2015-3204 · NVD
- FIRST EPSS
- GHSA-52gh-6xp3-9wpf · GitHub Advisory Database · CC BY 4.0
- CVE-2015-3204 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences