TZipBuilder Buffer Overflow in Processing ZIP Archives Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1016064
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SecurityTracker URL: http://securitytracker.com/id?1016064
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CVE Reference: CVE-2006-2161
(Links to External Site)
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Date: May 11 2006
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Impact: Execution of arbitrary code via network, User access via network
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Fix Available: Yes
Vendor Confirmed: Yes
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Advisory: Secunia Research
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Version(s): prior to 1.79.04.00
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Description: A vulnerability was reported in TZipBuilder. A remote user can cause arbitrary code to be executeed on the target user's system.
The software contains a buffer overflow that can be triggered by listing the contents of a ZIP archive that includes a file with
a specially crafted filename. A remote user can create a ZIP archive with a file with a specially crafted filename. When the archive
contents are listed by the target user (or an application that uses the affected software), a buffer overflow will occur and arbitrary
code will be executed on the target user's system. The code will run with the privileges of the target user.
The vendor was
notified on May 3, 2006.
Tan Chew Keong of Secunia Research discovered this vulnerability.
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Impact: A remote user can create an archive that, when listed by the target user, will cause arbitrary code to be executed on the target user's system.
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Solution: The vendor has issued a fixed version (1.79.04.00), available at:
http://www.drehoeksw.net/ZipBuild2.html
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Vendor URL: www.drehoeksw.net/EZipBuilder.html (Links to External Site)
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Cause: Boundary error
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Underlying OS: Windows (Any)
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Reported By: Secunia Research <remove-vuln@secunia.com>
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Message History:
None.
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Source Message Contents
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Date: Mon, 08 May 2006 15:13:41 +0200
From: Secunia Research <remove-vuln@secunia.com>
Subject: Secunia Research: TZipBuilder ZIP File Handling Buffer Overflow
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======================================================================
Secunia Research 08/05/2006
- TZipBuilder ZIP File Handling Buffer Overflow Vulnerability -
======================================================================
Table of Contents
Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9
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1) Affected Software
* TZipBuilder 1.79.03.01.
Prior versions may also be affected.
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2) Severity
Rating: Moderately Critical
Impact: System Access
Where: Remote
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3) Description of Vulnerability
Secunia Research has discovered a vulnerability in TZipBuilder, which
can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error when listing the
contents of a ZIP archive that contains a file with an overly long
filename. This can be exploited to cause a stack-based buffer overflow
when a specially crafted ZIP archive is opened.
Successful exploitation allows execution of arbitrary code with the
privileges of an application that uses the library.
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4) Solution
Update to version 1.79.04.00.
http://www.drehoeksw.net/ZipBuild2.html
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5) Time Table
03/05/2006 - Initial vendor notification.
03/05/2006 - Initial vendor reply.
08/05/2006 - Public disclosure.
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6) Credits
Discovered by Tan Chew Keong, Secunia Research.
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7) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2006-2161 for the vulnerability.
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8) About Secunia
Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia website:
http://secunia.com/
Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
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9) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2006-26/advisory/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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