strongSwan up to 5.1.2 IKEv2 improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in strongSwan up to 5.1.2. Affected is an unknown function of the component IKEv2 Handler. The manipulation leads to improper authentication. This vulnerability is documented as CVE-2014-2338. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in strongSwan up to 5.1.2 (Network Encryption Software) and classified as critical. This issue affects some unknown functionality of the component IKEv2 Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, and integrity. The summary by CVE is:

IKEv2 in strongSwan 4.0.7 before 5.1.3 allows remote attackers to bypass authentication by rekeying an IKE_SA during (1) initiation or (2) re-authentication, which triggers the IKE_SA state to be set to established.

The weakness was released 04/14/2014 as strongSwan Authentication Bypass Vulnerability (CVE-2014-2338) as confirmed advisory (Website). The advisory is shared at strongswan.org. The public release was coordinated with the project team. The identification of this vulnerability is CVE-2014-2338 since 03/12/2014. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

An authentication bypass vulnerability was discovered in strongSwan. It can be triggered by rekeying an unestablished IKEv2 SA while it gets actively initiated.

The vulnerability scanner Nessus provides a plugin with the ID 73555 (SuSE 11.3 Security Update : strongswan (SAT Patch Number 9089)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166997 (OpenSuSE Security Update for strongswan (openSUSE-SU-2014:0697-1)).

Upgrading to version 5.1.3 eliminates this vulnerability. The upgrade is hosted for download at strongswan.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at download.strongswan.org. It is possible to mitigate the problem by applying the configuration setting reauth=yes; auto=add. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

Only installations that actively initiate or re-authenticate IKEv2 IKE_SAs are affected.

The vulnerability is also documented in the databases at X-Force (92590), Tenable (73555), SecurityFocus (BID 66815†), Secunia (SA57823†) and Vulnerability Center (SBV-44160†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Not Affected

  • strongSwan up to 4.0.6

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73555
Nessus Name: SuSE 11.3 Security Update : strongswan (SAT Patch Number 9089)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 867717
OpenVAS Name: Fedora Update for strongswan FEDORA-2014-5231
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: strongSwan 5.1.3
Patch: download.strongswan.org
Config: reauth=yes; auto=add

Timelineinfo

03/12/2014 🔍
04/14/2014 +33 days 🔍
04/14/2014 +0 days 🔍
04/14/2014 +0 days 🔍
04/15/2014 +1 days 🔍
04/16/2014 +1 days 🔍
04/16/2014 +0 days 🔍
04/16/2014 +0 days 🔍
04/16/2014 +0 days 🔍
04/20/2014 +4 days 🔍
06/17/2021 +2615 days 🔍

Sourcesinfo

Advisory: strongSwan Authentication Bypass Vulnerability (CVE-2014-2338)
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-2338 (🔍)
GCVE (CVE): GCVE-0-2014-2338
GCVE (VulDB): GCVE-100-13001

OVAL: 🔍

X-Force: 92590
SecurityFocus: 66815 - strongSwan CVE-2014-2338 Authentication Bypass Vulnerability
Secunia: 57823 - Debian update for strongswan, Moderately Critical
Vulnerability Center: 44160 - strongSwan 4.0.7 Through 5.1.2 Remote Security Bypass due to an Error in IKEv2, Medium

Entryinfo

Created: 04/16/2014 17:52
Updated: 06/17/2021 13:01
Changes: 04/16/2014 17:52 (83), 05/25/2017 19:10 (6), 06/17/2021 13:01 (3)
Complete: 🔍
Cache ID: 216:9DC:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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