Executive Summary

Title BitZipper 2013 memory-corruption vulnerability
Name VU#880916 First vendor Publication 2013-04-19
Vendor VU-CERT Last vendor Modification 2013-04-19
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
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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
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Vulnerability Note VU#880916

BitZipper 2013 memory-corruption vulnerability

Original Release date: 19 Apr 2013 | Last revised: 19 Apr 2013


BitZipper 2013 contains a memory-corruption vulnerability, which may allow a remote unauthenticated attacker to execute arbitrary code on a vulnerable system.


BitZipper 2013 contains a memory-corruption vulnerability, which may allow a remote unauthenticated attacker to execute arbitrary code on a vulnerable system.


By convincing a user to view a specially crafted ZIP document, an attacker may be able to execute arbitrary code on a vulnerable system.



The vendor has stated that this vulnerability has been addressed in BitZipper 2013 Update 1. Users are advised to update to BitZipper 2013 Update 1 or later.

Use the Microsoft Enhanced Mitigation Experience Toolkit

The Microsoft Enhanced Mitigation Experience Toolkit (EMET) can be used to help prevent exploitation of this vulnerability. CERT/CC has created a video tutorial for setting up EMET 3.0 on Windows 7. Note that platforms that do not support ASLR, such as Windows XP and Windows Server 2003, will not receive the same level of protection that modern Windows platforms will.

Enable DEP in Microsoft Windows

Consider enabling Data Execution Prevention (DEP) in supported versions of Windows. DEP should not be treated as a complete workaround, but it can mitigate the execution of attacker-supplied code in some cases. Microsoft has published detailed technical information about DEP in Security Research & Defense blog posts "Understanding DEP as a mitigation technology" part 1 and part 2. DEP should be used in conjunction with the application of patches or other mitigations described in this document.

Note that when relying on DEP for exploit mitigation, it is important to use a system that supports Address Space Layout Randomization (ASLR) as well. ASLR is not supported by Windows XP or Windows Server 2003 or earlier. ASLR was introduced with Microsoft Windows Vista and Windows Server 2008. Please see the Microsoft SRD blog entry: On the effectiveness of DEP and ASLR for more details.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
BitZipperAffected04 Mar 201316 Apr 2013
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)



  • http://support.microsoft.com/kb/2458544
  • http://blogs.technet.com/srd/archive/2009/06/05/understanding-dep-as-a-mitigation-technology-part-1.aspx
  • http://blogs.technet.com/srd/archive/2009/06/12/understanding-dep-as-a-mitigation-technology-part-2.aspx
  • http://blogs.technet.com/b/srd/archive/2010/12/08/on-the-effectiveness-of-dep-and-aslr.aspx
  • http://www.bitzipper.com/


Thanks to Christopher Gabriel of Telos Corporation for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

  • CVE IDs:CVE-2013-0138
  • Date Public:16 Apr 2013
  • Date First Published:19 Apr 2013
  • Date Last Updated:19 Apr 2013
  • Document Revision:11


If you have feedback, comments, or additional information about this vulnerability, please send us email.

Original Source

Url : http://www.kb.cert.org/vuls/id/880916

CPE : Common Platform Enumeration

Application 9

Nessus® Vulnerability Scanner

Date Description
2013-05-23 Name : The remote Windows host has a data compression tool that is affected by a mem...
File : bitzipper_2013_update_1.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 12:08:15
  • Multiple Updates
2013-05-16 17:18:13
  • Multiple Updates
2013-05-11 05:18:22
  • Multiple Updates
2013-04-22 21:20:28
  • Multiple Updates
2013-04-22 13:20:24
  • Multiple Updates
2013-04-19 17:18:39
  • First insertion