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Vulnerability Details : 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.
Publish Date : 2009-08-04 Last Update Date : 2009-11-24
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 310

- Related OVAL Definitions

Title Definition Id Class Family
CVE-2009-2661 oval:org.opensuse.security:def:20092661 unix
DSA-1899 strongswan -- several vulnerabilities oval:org.mitre.oval:def:8047 unix
DSA-1899-1 strongswan -- several oval:org.mitre.oval:def:13577 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-2661

# Product Type Vendor Product Version Update Edition Language
1 Application Strongswan Strongswan 2.8.0 Version Details Vulnerabilities
2 Application Strongswan Strongswan 2.8.1 Version Details Vulnerabilities
3 Application Strongswan Strongswan 2.8.2 Version Details Vulnerabilities
4 Application Strongswan Strongswan 2.8.3 Version Details Vulnerabilities
5 Application Strongswan Strongswan 2.8.4 Version Details Vulnerabilities
6 Application Strongswan Strongswan 2.8.5 Version Details Vulnerabilities
7 Application Strongswan Strongswan 2.8.6 Version Details Vulnerabilities
8 Application Strongswan Strongswan 2.8.7 Version Details Vulnerabilities
9 Application Strongswan Strongswan 2.8.8 Version Details Vulnerabilities
10 Application Strongswan Strongswan 2.8.10 Version Details Vulnerabilities
11 Application Strongswan Strongswan 4.2.0 Version Details Vulnerabilities
12 Application Strongswan Strongswan 4.2.1 Version Details Vulnerabilities
13 Application Strongswan Strongswan 4.2.2 Version Details Vulnerabilities
14 Application Strongswan Strongswan 4.2.3 Version Details Vulnerabilities
15 Application Strongswan Strongswan 4.2.10 Version Details Vulnerabilities
16 Application Strongswan Strongswan 4.2.11 Version Details Vulnerabilities
17 Application Strongswan Strongswan 4.2.12 Version Details Vulnerabilities
18 Application Strongswan Strongswan 4.2.13 Version Details Vulnerabilities
19 Application Strongswan Strongswan 4.2.14 Version Details Vulnerabilities
20 Application Strongswan Strongswan 4.2.15 Version Details Vulnerabilities
21 Application Strongswan Strongswan 4.2.16 Version Details Vulnerabilities
22 Application Strongswan Strongswan 4.3.0 Version Details Vulnerabilities
23 Application Strongswan Strongswan 4.3.1 Version Details Vulnerabilities
24 Application Strongswan Strongswan 4.3.2 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Strongswan Strongswan 24

- References For CVE-2009-2661

http://secunia.com/advisories/36922
SECUNIA 36922
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
SUSE SUSE-SR:2009:018
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
SUSE SUSE-SR:2009:016
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch CONFIRM
http://up2date.astaro.com/2009/08/up2date_7505_released.html CONFIRM
http://www.vupen.com/english/advisories/2009/2247
VUPEN ADV-2009-2247
http://www.openwall.com/lists/oss-security/2009/07/27/1
MLIST [oss-security] 20090727 CVE id request: strongswan
http://www.debian.org/security/2009/dsa-1899
DEBIAN DSA-1899
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patch CONFIRM
https://lists.strongswan.org/pipermail/announce/2009-July/000056.html
MLIST [Announce] 20090723 ANNOUNCE: strongswan-2.8.11 and strongswan-4.2.17 released

- Metasploit Modules Related To CVE-2009-2661

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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