VDB-12185 · OSVDB 102791 · GCVE-100-12185

Microsoft .NET Framework 2/4 HMAC improper authentication

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft .NET Framework 2/4. It has been classified as critical. This affects an unknown function of the component HMAC Handler. The manipulation leads to improper authentication. The attack needs to be initiated within the local network. No exploit is available.

Detailsinfo

A vulnerability was found in Microsoft .NET Framework 2/4 (Programming Language Software). It has been rated as critical. This issue affects an unknown code block of the component HMAC 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, integrity, and availability.

The weakness was published 01/07/2014 by James Forshaw as Exploiting XML Digital Signature Implementations as not defined article (Magazine). The advisory is shared at magazine.hackinthebox.org. The public release happened without involvement of Microsoft. Access to the local network is required for this attack. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/05/2017).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at OSVDB (102791†). Similar entries are available at VDB-12183, VDB-12184 and VDB-12186. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

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

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/07/2014 🔍
02/06/2014 +30 days 🔍
04/05/2017 +1154 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: Exploiting XML Digital Signature Implementations
Researcher: James Forshaw
Status: Not defined

GCVE (VulDB): GCVE-100-12185
OSVDB: 102791

See also: 🔍

Entryinfo

Created: 02/06/2014 14:11
Updated: 04/05/2017 16:07
Changes: 02/06/2014 14:11 (42), 04/05/2017 16:07 (2)
Complete: 🔍
Committer: olku
Cache ID: 216::103

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

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