Microsoft Silverlight 5 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Microsoft Silverlight 5. This issue affects some unknown processing. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2016-3367. The attack is possible to be carried out remotely. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in Microsoft Silverlight 5 (Multimedia Player Software). This affects an unknown code. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 09/13/2016 with Microsoft as MS16-109 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. This vulnerability is uniquely identified as CVE-2016-3367 since 03/15/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The advisory points out:

A remote code execution vulnerability exists when Microsoft Silverlight improperly allows applications to access objects in memory. The vulnerability could corrupt system memory, which could allow an attacker to execute arbitrary code. In a web-browsing scenario, an attacker who successfully exploited this vulnerability could obtain the same permissions as the currently logged-on user. If a user is logged on with administrative user rights, an attacker could take complete control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

The vulnerability scanner Nessus provides a plugin with the ID 93463 (MS16-109: Security Update for Silverlight (3182373) (Mac OS X)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91272 (Microsoft Silverlight Remote Code Execution Vulnerability (MS16-109)). The advisory illustrates:

To exploit the vulnerability, an attacker could host a website that contains a specially crafted Silverlight application and then convince a user to visit the compromised website. The attacker could also take advantage of websites containing specially crafted content, including those that accept or host user-provided content or advertisements. For example, an attacker could display specially crafted web content by using banner advertisements or by using other methods to deliver web content to affected systems. However, in all cases an attacker would have no way to force a user to visit a compromised website. Instead, an attacker would have to convince a user to visit the website, typically by enticing the user to click a link in either an email or instant message.

Applying the patch MS16-109 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 (93463) and SecurityFocus (BID 92837†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 93463
Nessus Name: MS16-109: Security Update for Silverlight (3182373) (Mac OS X)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53693
OpenVAS Name: Microsoft Silverlight Remote Code Execution Vulnerability (3182373)
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: MS16-109

Timelineinfo

03/15/2016 🔍
09/13/2016 +182 days 🔍
09/13/2016 +0 days 🔍
09/13/2016 +0 days 🔍
09/13/2016 +0 days 🔍
09/14/2016 +1 days 🔍
09/14/2016 +0 days 🔍
10/07/2024 +2945 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS16-109
Organization: Microsoft
Status: Confirmed

CVE: CVE-2016-3367 (🔍)
GCVE (CVE): GCVE-0-2016-3367
GCVE (VulDB): GCVE-100-91557
SecurityFocus: 92837 - Microsoft Silverlight CVE-2016-3367 Remote Memory Corruption Vulnerability
SecurityTracker: 1036795

Entryinfo

Created: 09/14/2016 17:20
Updated: 10/07/2024 02:40
Changes: 09/14/2016 17:20 (67), 04/16/2019 16:25 (12), 09/16/2022 11:28 (4), 10/07/2024 02:40 (16)
Complete: 🔍
Cache ID: 216::103

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