MS13-034 - Vulnerability in Microsoft Antimalware Client Could Allow Elevation of Privilege (2823482)

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Details
Vulnerability name/brief description MS13-034 - Vulnerability in Microsoft Antimalware Client Could Allow Elevation of Privilege (2823482)
CVE/CAN name
Vendor threat level Important
SophosLabs threat level low
Solution MS13-034
Vendor description This security update resolves a privately reported vulnerability in the Microsoft Antimalware Client. The vulnerability could allow elevation of privilege due to the pathnames used by the Microsoft Antimalware Client. An attacker who successfully exploited this vulnerability could execute arbitrary code and take complete control of an affected system. The attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker must have valid logon credentials to exploit this vulnerability. The vulnerability could not be exploited by anonymous users.
SophosLabs comments The vulnerability exists because of a certain pathname in the registry information for the Microsoft Antimalware Client.
SophosLabs testing result No SophosLabs testing result found
Currently known exploits No currently known exploits found
First sample seen No samples found
Discovery date 09 Apr 2013
Affected software Windows Defender for Windows 8
Windows Defender for Windows RT
References
Credits
  • MAPP
Revisions
  • April 9, 2013 - Initial analysis written

Explanation of terms

Vulnerability Name/Brief Description:

Vendor identifier plus a brief description of the type of attack.

CVE/CAN Name:

Currently assigned CVE name. If a CVE name doesn't exist the CAN name will be used until a CVE has been assigned.

Vendor Threat Level:

Threat level assigned by the vendor

SophosLabs Threat Level:

Threat level assigned by SophosLabs

  • LOW RISK - There is little chance of this vulnerability being actively exploited by malware.
  • MEDIUM RISK - There is a possibility of this vulnerability being actively exploited by malware.
  • HIGH RISK - There is a strong possibility of this vulnerability being actively exploited by malware.
  • CRITICAL RISK - This vulnerability will almost certainly be actively exploited by malware.

Solution:

Vendor-supplied Patch identifier and recommended solution, or workaround if applicable.

Vendor Description:

Summary of the cause and potential effect of the vulnerability provided by the vendor.

SophosLabs Comments:

SophosLabs' opinions and observations of the vulnerability in question.

SophosLabs Testing Result:

Details of completed lab testing, if applicable. Please note that the lab test environment may differ significantly from user environments.

Currently Known Exploits:

List of identities for known exploits, if applicable.

First Sample Seen:

Date of the first sample seen by SophosLabs.

Discovery Date:

Date of the earliest known publically disclosed advisory.

Affected Software:

Vulnerable platforms and software versions.