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TI-2009-02543 Aliases CVE-2009-2661GHSA-7j3p-ffqc-xjpg

The asn1_length function in strongSwan 2.8 before 2.8.11, 4.2 before 4.2.17, and 4.3…

Priority LOW 26CWE-310Published · 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
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

The asn1_length function in strongSwan 2.8 before 2.8.11, 4.2 before 4.2.17, and 4.3 before 4.3.3 does not properly handle X.509 certificates with crafted Relative Distinguished Names (RDNs), which allows remote attackers to cause a denial of service (pluto IKE daemon crash) via malformed ASN.1 data. NOTE: this is due to an incomplete fix for CVE-2009-2185.

Why it matters now

EPSS 0.01577 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 24

CPEVersionsRoleVendor
cpe:2.3:a:strongswan:strongswan:2.8.0:*:*:*:*:*:*:*2.8.0VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.1:*:*:*:*:*:*:*2.8.1VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.2:*:*:*:*:*:*:*2.8.2VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.3:*:*:*:*:*:*:*2.8.3VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.4:*:*:*:*:*:*:*2.8.4VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.5:*:*:*:*:*:*:*2.8.5VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.6:*:*:*:*:*:*:*2.8.6VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.7:*:*:*:*:*:*:*2.8.7VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.8:*:*:*:*:*:*:*2.8.8VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:2.8.10:*:*:*:*:*:*:*2.8.10VulnerablestrongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.0:*:*:*:*:*:*:* Versions 2.8.0 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.1:*:*:*:*:*:*:* Versions 2.8.1 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.2:*:*:*:*:*:*:* Versions 2.8.2 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.3:*:*:*:*:*:*:* Versions 2.8.3 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.4:*:*:*:*:*:*:* Versions 2.8.4 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.5:*:*:*:*:*:*:* Versions 2.8.5 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.6:*:*:*:*:*:*:* Versions 2.8.6 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.7:*:*:*:*:*:*:* Versions 2.8.7 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.8:*:*:*:*:*:*:* Versions 2.8.8 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:2.8.10:*:*:*:*:*:*:* Versions 2.8.10 Vulnerable ·strongSwan
Show 14 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:strongswan:strongswan:4.2.0:*:*:*:*:*:*:*4.2.0VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.1:*:*:*:*:*:*:*4.2.1VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.2:*:*:*:*:*:*:*4.2.2VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.3:*:*:*:*:*:*:*4.2.3VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.10:*:*:*:*:*:*:*4.2.10VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.11:*:*:*:*:*:*:*4.2.11VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.12:*:*:*:*:*:*:*4.2.12VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.13:*:*:*:*:*:*:*4.2.13VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.14:*:*:*:*:*:*:*4.2.14VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.15:*:*:*:*:*:*:*4.2.15VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.2.16:*:*:*:*:*:*:*4.2.16VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.3.0:*:*:*:*:*:*:*4.3.0VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.3.1:*:*:*:*:*:*:*4.3.1VulnerablestrongSwan
cpe:2.3:a:strongswan:strongswan:4.3.2:*:*:*:*:*:*:*4.3.2VulnerablestrongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.0:*:*:*:*:*:*:* Versions 4.2.0 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.1:*:*:*:*:*:*:* Versions 4.2.1 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.2:*:*:*:*:*:*:* Versions 4.2.2 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.3:*:*:*:*:*:*:* Versions 4.2.3 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.10:*:*:*:*:*:*:* Versions 4.2.10 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.11:*:*:*:*:*:*:* Versions 4.2.11 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.12:*:*:*:*:*:*:* Versions 4.2.12 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.13:*:*:*:*:*:*:* Versions 4.2.13 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.14:*:*:*:*:*:*:* Versions 4.2.14 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.15:*:*:*:*:*:*:* Versions 4.2.15 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.2.16:*:*:*:*:*:*:* Versions 4.2.16 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.3.0:*:*:*:*:*:*:* Versions 4.3.0 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.3.1:*:*:*:*:*:*:* Versions 4.3.1 Vulnerable ·strongSwan
  • cpe:2.3:a:strongswan:strongswan:4.3.2:*:*:*:*:*:*:* Versions 4.3.2 Vulnerable ·strongSwan

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-2661
  2. 2026-10-03 Alias added: GHSA-7j3p-ffqc-xjpg

References

Patch 2

Advisory 3

Other 4

  • TI-2023-22300 strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code… CVSS 3.1CRITICAL 9.8
  • TI-2015-03374 strongSwan 5.2.2 and 5.3.0 allows remote attackers to cause a denial of service (daemon… CVSS 3.0CRITICAL 9.8
  • TI-2004-00531 FreeS/WAN 1.x and 2.x, and other related products including superfreeswan 1.x, openswan… CVSS 2.0HIGH 10.0
  • TI-2023-11610 strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a… CVSS 3.1CRITICAL 9.8
  • TI-2021-20414 In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too… CVSS 3.1CRITICAL 9.1
  • TI-2017-08240 The gmp plugin in strongSwan before 5.6.0 allows remote attackers to cause a denial of… CVSS 3.1HIGH 7.5
See all 47 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences