Microsoft .NET Framework up to 4.6 Array Copy memory corruption

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

A vulnerability has been found in Microsoft .NET Framework up to 4.6 (Programming Language Software) and classified as critical. Affected by this vulnerability is some unknown functionality of the component Array Copy Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, 4.5.2, and 4.6 improperly counts objects before performing an array copy, which allows remote attackers to (1) execute arbitrary code via a crafted XAML browser application (XBAP) or (2) bypass Code Access Security restrictions via a crafted .NET Framework application, aka ".NET Elevation of Privilege Vulnerability."

The weakness was released 09/08/2015 by Roberto Suggi Liverani (Rick) as MS15-101 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. This vulnerability is known as CVE-2015-2504 since 03/19/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 85847 (MS15-101: Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (3089662)), 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 91091 (Microsoft .NET Framework Elevation of Privilege and Denial of Service Vulnerability (MS15-101)).

Applying the patch MS15-101 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 (85847). Entry connected to this vulnerability is available at 77632.

Productinfo

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CPE 2.3info

CPE 2.2info

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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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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 85847
Nessus Name: MS15-101: Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (3089662)
Nessus File: 🔍
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OpenVAS ID: 802207
OpenVAS Name: Microsoft .NET Framework Privilege Elevation Vulnerabilities (3089662)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Patch: MS15-101
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Timelineinfo

03/19/2015 🔍
09/08/2015 +173 days 🔍
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09/09/2015 +1 days 🔍
09/09/2015 +0 days 🔍
06/14/2022 +2470 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS15-101
Researcher: Roberto Suggi Liverani (Rick)
Status: Confirmed

CVE: CVE-2015-2504 (🔍)
SecurityTracker: 1033493 - Microsoft .NET Bugs Let Local Users Gain Elevated Privileges and Remote Users Deny Service
Vulnerability Center: 52519 - [MS15-101] Microsoft .NET Framework on Windows Remote Privilege Escalation Vulnerability - CVE-2015-2504, Medium
SecurityFocus: 76560 - Microsoft .NET Framework CVE-2015-2504 Remote Privilege Escalation Vulnerability

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Entryinfo

Created: 09/09/2015 10:03
Updated: 06/14/2022 14:00
Changes: 09/09/2015 10:03 (71), 04/05/2017 16:01 (11), 06/14/2022 14:00 (3)
Complete: 🔍

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