MS14-024 - Vulnerability in MSCOMCTL could allow security feature bypass (2961033)

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Details
Vulnerability name/brief descriptionMS14-024 - Vulnerability in MSCOMCTL could allow security feature bypass (2961033)
CVE/CAN name
Vendor threat levelImportant
SophosLabs threat levelMedium
SolutionMS14-024
Vendor descriptionThis security update resolves one privately reported vulnerability in an implementation of the MSCOMCTL common controls library. The vulnerability could allow security feature bypass if a user views a specially crafted webpage in a web browser capable of instantiating COM components, such as Internet Explorer. In a web-browsing attack scenario, an attacker who successfully exploited this vulnerability could bypass the Address Space Layout Randomization (ASLR) security feature, which helps protect users from a broad class of vulnerabilities. The security feature bypass by itself does not allow arbitrary code execution. However, an attacker could use this ASLR bypass vulnerability in conjunction with another vulnerability, such as a remote code execution vulnerability that could take advantage of the ASLR bypass to run arbitrary code.
SophosLabs commentsThis vulnerability can be mitigated in Internet Explorer by using its security zone settings. Untrusted sites should be browsed under the High security settings. This will affect how pages are rendered. This will still leave any other software that can render ActiveX objects vulnerable.
SophosLabs testing resultNo SophosLabs testing result found
Currently known exploitsNo currently known exploits found
First sample seenNo samples found
Discovery date13 May 2014
Affected softwareMicrosoft Office 2007 Service Pack 3 (mscomct2)
Microsoft Office 2007 Service Pack 3 (mscomctlocx)
Microsoft Office 2007 Service Pack 3 (msaddndr)
Microsoft Office 2007 Service Pack 3 (msstdfmt)
Microsoft Office 2010 Service Pack 1 (32-bit editions) (mscomct2)
Microsoft Office 2010 Service Pack 2 (32-bit editions) (mscomct2)
Microsoft Office 2010 Service Pack 1 (32-bit editions) (mscomctlocx)
Microsoft Office 2010 Service Pack 2 (32-bit editions) (mscomctlocx)
Microsoft Office 2010 Service Pack 1 (32-bit editions) (msaddndr)
Microsoft Office 2010 Service Pack 2 (32-bit editions) (msaddndr)
Microsoft Office 2010 Service Pack 1 (64-bit editions) (mscomct2)
Microsoft Office 2010 Service Pack 2 (64-bit editions) (mscomct2)
Microsoft Office 2010 Service Pack 1 (64-bit editions) (msaddndr)
Microsoft Office 2010 Service Pack 2 (64-bit editions) (msaddndr)
Microsoft Office 2013 (32-bit editions) (mscomct2)
Microsoft Office 2013 Service Pack 1 (32-bit editions) (mscomct2)
Microsoft Office 2013 (32-bit editions) (mscomctlocx)
Microsoft Office 2013 Service Pack 1 (32-bit editions) (mscomctlocx)
Microsoft Office 2013 (64-bit editions) (mscomct2)
Microsoft Office 2013 Service Pack 1 (64-bit editions) (mscomct2)
Microsoft Office 2013 RT (mscomct2)
Microsoft Office 2013 RT Service Pack 1 (mscomct2)
References
Credits
  • MAPP
Revisions
  • May 13, 2014 - Initial Revision 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:

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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:

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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.