Microsoft Silverlight up to 5.1 Decoding input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

A vulnerability has been found in Microsoft Silverlight up to 5.1 (Multimedia Player Software) and classified as critical. This vulnerability affects an unknown part of the component Decoding Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."

The bug was discovered 01/12/2016. The weakness was published 01/12/2016 as MS16-006 as confirmed bulletin (Technet). The advisory is available at technet.microsoft.com. This vulnerability was named CVE-2016-0034 since 12/04/2015. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 87880 (MS16-006: Security Update for Silverlight to Address Remote Code Execution (3126036)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91153 (Microsoft Silverlight Remote Code Execution Vulnerability (MS16-006)). This issue was added on 05/25/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 06/15/2022:

The impacted products are end-of-life and should be disconnected if still in use.

Upgrading to version 5.1.41212.0 eliminates this vulnerability. Applying the patch MS16-006 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 22441.

The vulnerability is also documented in the vulnerability database at Tenable (87880).

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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NVD Base Score: 8.8
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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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Nessus ID: 87880
Nessus Name: MS16-006: Security Update for Silverlight to Address Remote Code Execution (3126036)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 103180
OpenVAS Name: Microsoft Silverlight Remote Code Execution Vulnerability (3126036)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Upgrade: Silverlight 5.1.41212.0
Patch: MS16-006
TippingPoint: 🔍

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Timelineinfo

12/04/2015 🔍
01/12/2016 +39 days 🔍
01/12/2016 +0 days 🔍
01/12/2016 +0 days 🔍
01/12/2016 +0 days 🔍
01/12/2016 +0 days 🔍
01/12/2016 +0 days 🔍
01/12/2016 +0 days 🔍
01/13/2016 +0 days 🔍
01/14/2016 +1 days 🔍
07/07/2019 +1270 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS16-006
Status: Confirmed

CVE: CVE-2016-0034 (🔍)
OVAL: 🔍

SecurityTracker: 1034655
Vulnerability Center: 55638 - [MS16-006] Microsoft Silverlight 5 Remote Code Execution Vulnerability, Critical
SecurityFocus: 79881

Entryinfo

Created: 01/14/2016 10:44
Updated: 07/07/2019 11:29
Changes: 01/14/2016 10:44 (88), 07/07/2019 11:29 (6)
Complete: 🔍

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