strongSwan up to 4.3.2 Certificates asn1_length cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in strongSwan and classified as problematic. This affects the function asn1_length of the component Certificates. This manipulation causes cryptographic issue. This vulnerability is registered as CVE-2009-2661. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in strongSwan (Network Encryption Software). It has been declared as problematic. Affected by this vulnerability is the function asn1_length of the component Certificates. The manipulation with an unknown input leads to a cryptographic issue vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect availability. The summary by CVE is:

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.

The weakness was published 08/04/2009 (Website). It is possible to read the advisory at lists.strongswan.org. This vulnerability is known as CVE-2009-2661. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 41621 (SuSE9 Security Update : freeswan (YOU Patch Number 12503)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks.

Upgrading to version 2.8.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (52777), Tenable (41621) and Vulnerability Center (SBV-23592†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
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Nessus ID: 41621
Nessus Name: SuSE9 Security Update : freeswan (YOU Patch Number 12503)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 65006
OpenVAS Name: Debian Security Advisory DSA 1899-1 (strongswan)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: strongSwan 2.8.3

Timelineinfo

07/23/2009 🔍
08/04/2009 +11 days 🔍
08/04/2009 +0 days 🔍
08/04/2009 +0 days 🔍
09/25/2009 +52 days 🔍
09/29/2009 +4 days 🔍
03/18/2015 +1996 days 🔍
08/13/2021 +2340 days 🔍

Sourcesinfo

Advisory: lists.strongswan.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-2661 (🔍)
GCVE (CVE): GCVE-0-2009-2661
GCVE (VulDB): GCVE-100-49255

OVAL: 🔍

X-Force: 52777
Vulnerability Center: 23592 - StrongSwan 2.8-2.8.10, 4.2-4.2.16, and 4.3-4.3.2 asn1_length Function Remote DoS Vulnerability, High

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/13/2021 10:48
Changes: 03/18/2015 15:15 (59), 02/15/2017 09:22 (7), 08/13/2021 10:42 (4), 08/13/2021 10:48 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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