Microsoft Silverlight 5 Integrity Level access control

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Microsoft Silverlight 5 (Multimedia Player Software). This issue affects an unknown function of the component Integrity Level Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Microsoft Silverlight 5 before 5.1.40416.00 allows remote attackers to bypass intended integrity-level restrictions via a crafted Silverlight application, aka "Microsoft Silverlight Out of Browser Application Vulnerability."

The weakness was released 05/12/2015 by Ligen with Exodus Intelligence as MS15-049 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. The identification of this vulnerability is CVE-2015-1715 since 02/17/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 83354 (MS15-049: Vulnerability in Silverlight Could Allow Elevation of Privilege (3058985)), 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 MS15-049 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 (83354). krebsonsecurity.com is providing further details. Entries connected to this vulnerability are available at 75247, 75248, 75249 and 75250.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Nessus ID: 83354
Nessus Name: MS15-049: Vulnerability in Silverlight Could Allow Elevation of Privilege (3058985)
Nessus File: 🔍
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Nessus Family: 🔍

OpenVAS ID: 103180
OpenVAS Name: Microsoft Silverlight Elevation of Privilege Vulnerability (3058985) (Mac OS X)
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OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Patch: MS15-049

Timelineinfo

02/17/2015 🔍
05/12/2015 +84 days 🔍
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05/13/2015 +1 days 🔍
05/13/2015 +0 days 🔍
05/13/2015 +0 days 🔍
05/17/2022 +2561 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS15-049
Researcher: Ligen
Organization: Exodus Intelligence
Status: Confirmed

CVE: CVE-2015-1715 (🔍)
OVAL: 🔍

SecurityTracker: 1032298 - Microsoft Silverlight Permission Error Lets Local and Remote Users Gain Elevated Privileges
Vulnerability Center: 50045 - [MS15-049] Microsoft Silverlight 5 Local Privilege Escalation Vulnerability, High
SecurityFocus: 74503 - Microsoft Silverlight CVE-2015-1715 Privilege Escalation Vulnerability

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Entryinfo

Created: 05/13/2015 12:27
Updated: 05/17/2022 09:50
Changes: 05/13/2015 12:27 (74), 06/28/2017 06:28 (8), 05/17/2022 09:50 (3)
Complete: 🔍

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