Microsoft Windows up to Vista TLS Schannel input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Microsoft Windows up to Vista (Operating System). Affected by this issue is an unknown function of the component TLS Schannel. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, and integrity.

The weakness was shared 11/10/2015 with Microsoft as MS15-121 as confirmed bulletin (Technet). The advisory is shared for download at technet.microsoft.com. This vulnerability is handled as CVE-2015-6112 since 08/14/2015. The exploitation is known to be difficult. 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 vulnerability scanner Nessus provides a plugin with the ID 86827 (MS15-121: Security Update for Schannel to Address Spoofing (3081320)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins.

Applying the patch MS15-121 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 (86827). The entries 79185, 79183 and 79182 are related to this item.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
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CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Nessus ID: 86827
Nessus Name: MS15-121: Security Update for Schannel to Address Spoofing (3081320)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Patch: MS15-121

Timelineinfo

08/14/2015 🔍
11/10/2015 +88 days 🔍
11/10/2015 +0 days 🔍
11/10/2015 +0 days 🔍
11/10/2015 +0 days 🔍
11/11/2015 +1 days 🔍
11/11/2015 +0 days 🔍
11/11/2015 +0 days 🔍
06/27/2022 +2420 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS15-121
Organization: Microsoft
Status: Confirmed

CVE: CVE-2015-6112 (🔍)
SecurityTracker: 1034124
Vulnerability Center: 54327 - [MS15-121] Microsoft Windows Schannel Remote Spoofing Vulnerability, Medium
SecurityFocus: 77484 - Microsoft Windows SChannel CVE-2015-6112 Man in the Middle Security Bypass Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍

Entryinfo

Created: 11/11/2015 17:08
Updated: 06/27/2022 10:43
Changes: 11/11/2015 17:08 (60), 05/03/2019 06:55 (10), 06/27/2022 10:32 (4), 06/27/2022 10:37 (1), 06/27/2022 10:43 (1)
Complete: 🔍

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