Microsoft .NET Framework up to 4.5 XML External Entity input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Microsoft .NET Framework up to 4.5. This affects an unknown part of the component XML External Entity Handler. This manipulation causes input validation. The identification of this vulnerability is CVE-2013-3860. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical was found in Microsoft .NET Framework up to 4.5 (Programming Language Software). Affected by this vulnerability is some unknown processing of the component XML External Entity 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 availability. The summary by CVE is:

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5 SP1, 3.5.1, 4, and 4.5 does not properly parse a DTD during XML digital-signature validation, which allows remote attackers to cause a denial of service (application crash or hang) via a crafted signed XML document, aka "Entity Expansion Vulnerability."

The weakness was shared 10/08/2013 by James Forshaw with Context Information Security as MS13-082 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The vendor cooperated in the coordination of the public release. This vulnerability is known as CVE-2013-3860 since 06/03/2013. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a private exploit is available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 70334 (MS13-082: Vulnerabilities in .NET Framework Could Allow Remote Code Execution (2878890)), 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 90912 (Microsoft .NET Framework Code Execution and Denial of Service Vulnerabilities (MS13-082)).

Applying the patch MS13-082 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. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 13179.

The vulnerability is also documented in the databases at Tenable (70334), OSVDB (98215†), Secunia (SA55043†) and Vulnerability Center (SBV-41816†). The entries VDB-10632 and VDB-10640 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 70334
Nessus Name: MS13-082: Vulnerabilities in .NET Framework Could Allow Remote Code Execution (2878890)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 903412
OpenVAS Name: Microsoft .NET Framework Remote Code Execution Vulnerabilities (2878890)
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: MS13-082
TippingPoint: 🔍

McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

06/03/2013 🔍
08/10/2013 +68 days 🔍
10/08/2013 +59 days 🔍
10/08/2013 +0 days 🔍
10/08/2013 +0 days 🔍
10/09/2013 +1 days 🔍
10/09/2013 +0 days 🔍
10/09/2013 +0 days 🔍
05/26/2021 +2786 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS13-082
Researcher: James Forshaw
Organization: Context Information Security
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-3860 (🔍)
GCVE (CVE): GCVE-0-2013-3860
GCVE (VulDB): GCVE-100-10639

OVAL: 🔍
IAVM: 🔍

Secunia: 55043 - Microsoft .NET Framework Multiple Vulnerabilities, Highly Critical
OSVDB: 98215
Vulnerability Center: 41816 - [MS13-082] Microsoft .Net Framework Remote Denial of Service (CVE-2013-3860), High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 10/09/2013 18:06
Updated: 05/26/2021 14:13
Changes: 10/09/2013 18:06 (83), 04/05/2017 16:08 (6), 05/26/2021 14:13 (3)
Complete: 🔍
Cache ID: 216::103

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