Microsoft .NET Framework up to 4.6.2 cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Microsoft .NET Framework up to 4.6.2. This vulnerability affects unknown code. Such manipulation leads to cryptographic issue. This vulnerability is referenced as CVE-2016-7270. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft .NET Framework up to 4.6.2 (Programming Language Software) and classified as problematic. Affected by this issue is some unknown functionality. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality. CVE summarizes:

The Data Provider for SQL Server in Microsoft .NET Framework 4.6.2 mishandles a developer-supplied key, which allows remote attackers to bypass the Always Encrypted protection mechanism and obtain sensitive cleartext information by leveraging key guessability, aka ".NET Information Disclosure Vulnerability."

The weakness was published 12/13/2016 with Microsoft as MS16-155 as confirmed bulletin (Technet). The advisory is shared for download at technet.microsoft.com. This vulnerability is handled as CVE-2016-7270 since 09/09/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability scanner Nessus provides a plugin with the ID 95772 (MS16-155: Security Update for .NET Framework (3205640)), 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 91318 (Microsoft .NET Framework Information Disclosure Vulnerability (MS16-155)).

Applying the patch MS16-155 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 databases at Tenable (95772) and SecurityFocus (BID 94741†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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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: 🔍

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Nessus ID: 95772
Nessus Name: MS16-155: Security Update for .NET Framework (3205640)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 103306
OpenVAS Name: Microsoft .NET Framework Information Disclosure Vulnerability (3205640)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: MS16-155

Timelineinfo

09/09/2016 🔍
12/13/2016 +95 days 🔍
12/13/2016 +0 days 🔍
12/13/2016 +0 days 🔍
12/14/2016 +1 days 🔍
12/20/2016 +6 days 🔍
10/08/2022 +2118 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS16-155
Organization: Microsoft
Status: Confirmed

CVE: CVE-2016-7270 (🔍)
GCVE (CVE): GCVE-0-2016-7270
GCVE (VulDB): GCVE-100-94460

OVAL: 🔍

SecurityFocus: 94741 - Microsoft .NET Framework CVE-2016-7270 Information Disclosure Vulnerability
SecurityTracker: 1037455

Entryinfo

Created: 12/14/2016 14:34
Updated: 10/08/2022 14:13
Changes: 12/14/2016 14:34 (67), 04/05/2017 16:35 (12), 10/08/2022 14:09 (4), 10/08/2022 14:13 (1)
Complete: 🔍
Cache ID: 216:28C:103

Once again VulDB remains the best source for vulnerability data.

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