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Foofus.net Security Advisory 20100726 - Symantec Antivirus CE Command Execution

Foofus.net Security Advisory 20100726 - Symantec Antivirus CE Command Execution
Posted Jul 26, 2010
Authored by Spider | Site foofus.net

The Symantec Antivirus Corporate Edition AMS Intel Alert Handler service (hndlrsvc.exe) provides alert setup and response capabilities to AMS2. A design error in Symantec's implementation of this function allows an attacker who can establish a TCP connection to port 38292, on a vulnerable host to execute commands at system level on that host. Versions 10.1.8.8000 and below are affected.

tags | advisory, tcp
SHA-256 | fbd8d8c9489c9d5364d8d254c147e664b61c9384cceec62815a48e5a516b2f90

Foofus.net Security Advisory 20100726 - Symantec Antivirus CE Command Execution

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==================================================
Foofus.net Security Advisory: foofus-20100726
==================================================
Title: Symantec Antivirus Corporate Edition AMS Intel Alert Handler

Version: 10.1.8.8000 and earlier

Vendor: Symantec

Release Date: 26.07.2010

Issue Status: Reported To Vendor on 01/06/2010

==================================================



1. Summary:



Alert Management Service (AMS2) is a service used to setup, manage and report

alerts within legacy Symantec Antivirus Corporate Edition products.



==================================================


2. Description:



The Intel Alert Handler service (hndlrsvc.exe) provides alert setup and response

capabilities to AMS2. A design error in Symantec's implementation of this function

allows an attacker who can establish a TCP connection to port 38292, on a vulnerable

host to execute commands at system level on that host.



No special exploit code is needed to carry out this attack, by leveraging the AMS

server console tool an attacker can setup an alert response to run a command on a

vulnerable system without authenticating. The AMS server console can also be used

to remotely trigger the alert causing the command to execute at system level.





==================================================


3. Impact:



Exploiting this allows an adversary to execute code on a vulnerable system with out

authenticating



==================================================



4. Affected Products:



All version of Symantec SAVCE with AMS server installed, or Symantec System CenterConsole

with AMS plugin installed are vulnerable to this exploit.



==================================================


5. Solution:



a. Uninstall Symantec System Center. It is advised that any system vulnerable to

this exploit have all Symantec products uninstalled and reinstalled. Uninstalling

the AMS plugin from an affected installation will not remove the vulnerability.

b. Uninstall AMS server

c. Disable Alert Handler (hndlrsvc.exe) service

d. Also upgrade to the latest version of Symantec Endpoint Protection



==================================================


6) Time Table:



01/06/2010 Reported Vulnerability to Vendor.

01/11/2010 Vendor acknowledged Receiving report

01/12/2010 Vendor Tried to convince me that this was XFR.exe issue

07/26/2010 Publishes Advisory



==================================================



7) Credits: Discovered by SPIDER



==================================================


8. Reference:



http://www.foofus.net/?page_id=149


==================================================


The Foofus.Net team is an assortment of security professionals located somewhere

in the Midwestern United States. http://www.foofus.net



==================================================


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