CVE-2009-2661

Home/CVE/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 hand

CVE

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 hand

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.

MEDIUM · CVSS 5 EPSS 0.01793

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No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence

Sigma rules0 YARA rules0

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Affected Products & Versions

strongswanall versions

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Scoring & Timeline

MEDIUM · CVSS v2 (legacy) · cve@mitre.org

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This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.

v2 Vector

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

Published to NVD04 Aug 2009 · 04:30 PM

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch

http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patchPatch

http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html

http://secunia.com/advisories/36922

http://up2date.astaro.com/2009/08/up2date_7505_released.html

Show all 10 references

http://www.debian.org/security/2009/dsa-1899

http://www.openwall.com/lists/oss-security/2009/07/27/1

http://www.vupen.com/english/advisories/2009/2247

https://lists.strongswan.org/pipermail/announce/2009-July/000056.htmlPatch

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