[guru] Symantec biztonsagi frissitesek
DATE: Tue, 04 Mar 2008 11:54:34 +0100
Két hibát is találtak a Symantec Scan Engine RAR állományokat kezelő
alrendszerében. Megfelelően preparált RAR állományokkal a támadó jelentős
mennyiségű memóriát fogyaszthat, ami a rendszer összeomlásához vezethet.
Stack buffer overflow hibát találtak a linux-os verzióban, ami megfelelően
preparált RAR állománnyal kód futtatást tesz lehetővé.
--- Begin Message ---
iDefense Security Advisory 02.26.08
http://labs.idefense.com/intelligence/vulnerabilities/
Feb 26, 2008
I. BACKGROUND
Symantec Scan Engine is a standalone Anti-Virus Engine that exposes a
scanning Application Programming Interface (API) directly to developers
who wish to integrate protection into their own custom applications.
More information is available on the vendor's site at the following
URL.
http://www.symantec.com/enterprise/products/overview.jsp?pcid=1008&pvid=836_1
II. DESCRIPTION
Remote exploitation of a Denial of Service vulnerability in Symantec
Scan Engine version 5.1.2 could allow an unauthenticated attacker to
create a denial of service (DoS) condition.
Symantec Scan Engine listens on TCP port 1344 to accept files for
scanning using the Internet Content Adaptation Protocol (ICAP). If the
service is sent a malformed RAR file, the service will consume massive
amounts of memory. This can result in a denial of service condition for
the application and operating system.
III. ANALYSIS
Exploitation allows remote unauthenticated attackers to cause the
process to consume excessive amounts memory. In order to exploit this
vulnerability, an attacker must be able to cause a malicious RAR file
to be scanned by the Symantec Scan Engine. Normally, no authentication
is required to reach the vulnerable code.
IV. DETECTION
iDefense confirmed the existence of this vulnerability in Symantec Scan
Engine 5.1.2. This issue affects both the Windows and Linux builds of
the product. Previous versions are suspected to be vulnerable.
V. WORKAROUND
iDefense is currently unaware of any workaround for this issue.
VI. VENDOR RESPONSE
Symantec has addressed this vulnerability by releasing updates for
various versions of the Symantec Scan Engine. For more information,
refer to their advisory at the following URL.
http://www.symantec.com/avcenter/security/Content/2008.02.27.html
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-0308 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
security problems.
VIII. DISCLOSURE TIMELINE
06/14/2007 Initial vendor notification
06/14/2007 Initial vendor response
02/26/2008 Coordinated public disclosure
IX. CREDIT
The discoverer of this vulnerability wishes to remain anonymous.
Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php
Free tools, research and upcoming events
http://labs.idefense.com/
X. LEGAL NOTICES
Copyright © 2008 iDefense, Inc.
Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically,
please e-mail customerservice@idefense.com for permission.
Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
reliance on, this information.
--- End Message ---
--- Begin Message ---
iDefense Security Advisory 02.26.08
http://labs.idefense.com/intelligence/vulnerabilities/
Feb 26, 2008
I. BACKGROUND
Symantec Scan Engine is a standalone Anti-Virus Engine that exposes a
scanning Application Programming Interface (API) directly to developers
who wish to integrate protection into their own custom applications.
More information is available on the vendor's site at the following
URL.
http://www.symantec.com/enterprise/products/overview.jsp?pcid=1008&pvid=836_1
II. DESCRIPTION
Remote exploitation of a stack based buffer overflow vulnerability in
Symantec Scan Engine version 5.1.2 could allow an unauthenticated
attacker to execute arbitrary code with the privileges of the scan
engine process.
Symantec Scan Engine listens on TCP port 1344 to accept files for
scanning using the Internet Content Adaptation Protocol (ICAP). If the
service is sent a specially malformed RAR file, a stack-based buffer
overflow will occur.
III. ANALYSIS
Exploitation allows remote unauthenticated attackers to execute
arbitrary code with the privileges of the scan engine process. The scan
engine can be configured to run either as a normal user or as root. In
order to exploit this vulnerability, an attacker must be able to cause
a malicious RAR file to be scanned by the Symantec Scan Engine.
Normally, no authentication is required to reach the vulnerable code.
IV. DETECTION
iDefense has confirmed this vulnerability in the Linux build of the
Symantec Scan Engine version 5.1.2. This issue does not affect the
Windows build of the product. Previous versions are suspected to be
vulnerable.
V. WORKAROUND
iDefense is currently unaware of any workaround for this issue.
VI. VENDOR RESPONSE
Symantec has addressed this vulnerability by releasing updates for
various versions of the Symantec Scan Engine. For more information,
refer to their advisory at the following URL.
http://www.symantec.com/avcenter/security/Content/2008.02.27.html
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-0309 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
security problems.
VIII. DISCLOSURE TIMELINE
06/14/2007 Initial vendor notification
06/14/2007 Initial vendor response
02/26/2008 Coordinated public disclosure
IX. CREDIT
The discoverer of this vulnerability wishes to remain anonymous.
Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php
Free tools, research and upcoming events
http://labs.idefense.com/
X. LEGAL NOTICES
Copyright © 2008 iDefense, Inc.
Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically,
please e-mail customerservice@idefense.com for permission.
Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
reliance on, this information.
--- End Message ---