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CVE-2009-2661

UnknownEPSS 1.58%

Last modified

CVE-2009-2661 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.58% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
1.58%

72.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
StrongswanStrongswan2.8.0
StrongswanStrongswan2.8.1
StrongswanStrongswan2.8.2
StrongswanStrongswan2.8.3
StrongswanStrongswan2.8.4
StrongswanStrongswan2.8.5
StrongswanStrongswan2.8.6
StrongswanStrongswan2.8.7
StrongswanStrongswan2.8.8
StrongswanStrongswan2.8.10
StrongswanStrongswan4.2.0
StrongswanStrongswan4.2.1
StrongswanStrongswan4.2.2
StrongswanStrongswan4.2.3
StrongswanStrongswan4.2.10
StrongswanStrongswan4.2.11
StrongswanStrongswan4.2.12
StrongswanStrongswan4.2.13
StrongswanStrongswan4.2.14
StrongswanStrongswan4.2.15
StrongswanStrongswan4.2.16
StrongswanStrongswan4.3.0
StrongswanStrongswan4.3.1
StrongswanStrongswan4.3.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-2661?
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.
How severe is CVE-2009-2661?
Severity scoring for CVE-2009-2661 is pending analysis. The EPSS model estimates a 1.58% probability of exploitation in the next 30 days.
How do I fix CVE-2009-2661?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST