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CVE-2009-2185

18
FAUCET Score

CVE-2009-2185 describes a denial-of-service vulnerability in the ASN.1 parser of strongSwan and OpenSwan, affecting specific versions prior to their respective patches. Remote attackers can crash the pluto IKE daemon by providing specially crafted X.509 certificates containing malformed Relative Distinguished Names, UTCTIME, or GENERALIZEDTIME strings. This vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and no authentication required, leading to a partial availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.8.0CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:2.8.0:*:*:*:*:*:*:*
2.8.1CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:2.8.1:*:*:*:*:*:*:*
2.8.2CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:2.8.2:*:*:*:*:*:*:*
2.8.3CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:2.8.3:*:*:*:*:*:*:*
2.8.4CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:2.8.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.37%
Probability of exploitation in next 30 days
EPSS Percentile
82.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0237 is in the 73rd percentile among its peer group of 23,725 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openswan-0:2.6.14-1.el5_3.3
View patch

Vendor Advisories (1)

redhatCVE-2009-2185Important

Openswan ASN.1 parser vulnerability

Jun 22, 2009

References

download.strongswan.org / CHANGES2.txt
Vendor Advisory
download.strongswan.org / CHANGES42.txt
Vendor Advisory
download.strongswan.org / CHANGES4.txt
Vendor Advisory
secunia.com / advisories/35522
Vendor Advisory
secunia.com / advisories/35698
secunia.com / advisories/35740
secunia.com / advisories/35804
secunia.com / advisories/36922
secunia.com / advisories/36950
secunia.com / advisories/37504
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11079
redhat.com / archives/fedora-package-announce/2009-July/msg00264.html
redhat.com / archives/fedora-package-announce/2009-July/msg00337.html
up2date.astaro.com / 2009/07/up2date_7404_released.html
debian.org / security/2009/dsa-1898
debian.org / security/2009/dsa-1899
ingate.com / Relnote.php
redhat.com / support/errata/RHSA-2009-1138.html
securityfocus.com / bid/35452
Patch
securitytracker.com / id
vupen.com / english/advisories/2009/1639
Vendor Advisory
vupen.com / english/advisories/2009/1706
vupen.com / english/advisories/2009/1829
vupen.com / english/advisories/2009/3354