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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2009-2661
Probability of exploitation activity in the next 30 days: 2.33%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 88 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2009-2661
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
[email protected] |
CWE ids for CVE-2009-2661
-
Assigned by: [email protected] (Primary)
References for CVE-2009-2661
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
-
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patch
Patch
-
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch
- http://up2date.astaro.com/2009/08/up2date_7505_released.html
- http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
- http://www.vupen.com/english/advisories/2009/2247
-
https://lists.strongswan.org/pipermail/announce/2009-July/000056.html
Patch
-
http://www.openwall.com/lists/oss-security/2009/07/27/1
- http://www.debian.org/security/2009/dsa-1899
Products affected by CVE-2009-2661
- cpe:2.3:a:strongswan:strongswan:4.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.12:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.11:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.2:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.3:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.8:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.6:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.7:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.13:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.0:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.1:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.10:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.4:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.5:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.15:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:2.8.10:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.14:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.2.16:*:*:*:*:*:*:*
- cpe:2.3:a:strongswan:strongswan:4.3.2:*:*:*:*:*:*:*