Microsoft .NET Framework 4.5 WCF Authentication Endpoint Setup improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Microsoft .NET Framework 4.5 (Programming Language Software). Affected is some unknown functionality of the component WCF Authentication Endpoint Setup. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, and integrity. CVE summarizes:

Microsoft .NET Framework 4.5 does not properly create policy requirements for custom Windows Communication Foundation (WCF) endpoint authentication in certain situations involving passwords over HTTPS, which allows remote attackers to bypass authentication by sending queries to an endpoint, aka "Authentication Bypass Vulnerability."

The weakness was shared 05/14/2013 with Microsoft as MS13-040 as confirmed bulletin (Microsoft Technet). The advisory is shared for download at technet.microsoft.com. The vendor cooperated in the coordination of the public release. This vulnerability is traded as CVE-2013-1337 since 01/12/2013. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a private exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 66415 (MS13-040: Vulnerabilities in .NET Framework Could Allow Spoofing (2836440)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90885 (Microsoft .Net Framework Spoofing and Authentication Bypass Vulnerabilities (MS13-040)).

Applying the patch MS13-040 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (66415). Further details are available at nakedsecurity.sophos.com. The entries 8711, 8712, 8713 and 8714 are related to this item.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Unproven

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 66415
Nessus Name: MS13-040: Vulnerabilities in .NET Framework Could Allow Spoofing (2836440)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: MS13-040
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

01/12/2013 🔍
05/14/2013 +122 days 🔍
05/14/2013 +0 days 🔍
05/14/2013 +0 days 🔍
05/14/2013 +0 days 🔍
05/15/2013 +1 days 🔍
05/16/2013 +1 days 🔍
05/11/2021 +2917 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS13-040
Organization: Microsoft
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-1337 (🔍)
OVAL: 🔍
IAVM: 🔍

Vulnerability Center: 39578 - [MS13-040] Microsoft .NET Framework 4.5 Remote Authentication Bypass due to Flaws With Policy Requirements for Custom WCF Endpoint Authentication, High
Secunia: 53350 - Microsoft .Net Framework Two Security Bypass Vulnerabilities, Less Critical
OSVDB: 93302

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 05/15/2013 16:20
Updated: 05/11/2021 12:33
Changes: 05/15/2013 16:20 (73), 04/05/2017 16:11 (8), 05/11/2021 12:33 (3)
Complete: 🔍

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