Vulnerability in Internet Explorer Could Allow Remote Code Execution (2934088)

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Details
Vulnerability name/brief description Vulnerability in Internet Explorer Could Allow Remote Code Execution (2934088)
CVE/CAN name
Vendor threat level No vendor threat level found
SophosLabs threat level Critical
Solution MS14-012
Vendor description Microsoft is aware of limited, targeted attacks that attempt to exploit a vulnerability in Internet Explorer 10. Only Internet Explorer 9 and Internet Explorer 10 are affected by this vulnerability. Other supported versions of Internet Explorer are not affected. Applying the Microsoft Fix it solution, "MSHTML Shim Workaround," prevents the exploitation of this issue. See the Suggested Actions section of this advisory for more information. The vulnerability is a remote code execution vulnerability. The vulnerability exists in the way that Internet Explorer accesses an object in memory that has been deleted or has not been properly allocated. The vulnerability may corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user within Internet Explorer. An attacker could host a specially crafted website that is designed to exploit this vulnerability through Internet Explorer and then convince a user to view the website.
SophosLabs comments This exploit is targeting IE10 with Adobe Flash installed. Installing Microsoft's Experience Mitigation Toolkit (EMET) or using a different version of IE stops the exploit from running.
SophosLabs testing result No SophosLabs testing result found
Currently known exploits
First sample seen 2014-02-14
Discovery date 14 Feb 2014
Affected software Internet Explorer 9:
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Internet Explorer 10:
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows 8 for 32-bit Systems
Windows 8 for x64-based Systems
Windows Server 2012
Windows RT
References
Credits
  • FireEye
  • MAPP
Revisions
  • February 19, 2014 - Updated

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:

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Vendor Description:

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SophosLabs Comments:

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SophosLabs Testing Result:

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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.