Executive Summary

Summary
Title VMware VMnc AVI video codec image height heap overflow
Informations
Name VU#444513 First vendor Publication 2009-09-05
Vendor VU-CERT Last vendor Modification 2009-09-05
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Vulnerability Note VU#444513

VMware VMnc AVI video codec image height heap overflow

Overview

The VMware VMnc video codec fails to properly handle the image height value in AVI files, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

Several VMware products include the ability to create and play movies of running virtual machines. The codec used in these movies is called VMnc, which is based on the VNC RFB protocol. The VMnc decoder is provided by the file vmnc.dll. The VMnc codec fails to properly handle video content with a specified height of less than 8 pixels. This flaw can lead to heap memory corruption. The vulnerable code in vmnc.dll may be reached via Windows applications that supports the DirectShow API.

II. Impact

By convincing a user to parse a specially crafted VMnc codec AVI file, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. This may occur as the result of several actions, including playing an AVI file with Windows Media Player, viewing a web page that uses the Windows Media Player ActiveX control or plug-in, or even simply by selecting an AVI file in Windows Explorer.

III. Solution

Apply an update

This issue is addressed in VMware Movie Decoder 6.5.3, Workstation 6.5.3, Player 6.5.3, and ACE 2.5.3. Details for obtaining these versions are available in VMware Security Advisory VMSA-2009-0012.

Remove the VMnc codec

If you are unable to apply an update, this vulnerability can be mitigated by removing the vmnc.dll file. Note that this will prevent a system from being able to play VMnc codec AVI files.

Systems Affected

VendorStatusDate NotifiedDate Updated
VMwareVulnerable2009-06-222009-09-05

References


http://lists.vmware.com/pipermail/security-announce/2009/000065.html

Credit

This vulnerability was reported by Will Dormann of the CERT/CC.

This document was written by Will Dormann.

Other Information

Date Public:2009-09-04
Date First Published:2009-09-05
Date Last Updated:2009-09-05
CERT Advisory: 
CVE-ID(s):CVE-2009-2628
NVD-ID(s):CVE-2009-2628
US-CERT Technical Alerts: 
Metric:4.05
Document Revision:17

Original Source

Url : http://www.kb.cert.org/vuls/id/444513

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-94 Failure to Control Generation of Code ('Code Injection')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 3
Application 1
Application 3
Application 4

OpenVAS Exploits

Date Description
2009-09-16 Name : VMware Products Multiple Vulnerabilities (Win) sep09
File : nvt/secpod_vmware_prdts_mult_vuln_win_sep09.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
57836 VMware Workstation Movie Decoder VMnc Codec (vmnc.dll) Crafted AVI File Handl...

Nessus® Vulnerability Scanner

Date Description
2009-09-09 Name : The remote host contains an application that is affected by multiple heap ove...
File : vmware_vmnc_codec_653.nasl - Type : ACT_GATHER_INFO