Versions of Symantec Endpoint Protection Manager 11.0 running the Network Threat Protection module on Windows Server 2003 are susceptible to a Denial of Service(DoS). Successful exploitation could potentially result in the system hosting Symantec Endpoint Protection Manager becoming unresponsive to IIS-based web server requests until restarted.
Product
|
Version
|
Build
|
Solution(s)
—|—|—|—
Symantec Endpoint Protection
|
All releases of SEP 11.x to include SEP11.0 RU7 MP1
|
All
|
SEP 11 RU7 MP2 or migrate to the latest SEP release
Affected Operating Systems
Operating System
|
Service Pack Level
—|—
Windows Server 2003
|
Service Pack 2 and below
Products Not Affected
Product
|
Version
—|—
Symantec Endpoint Protection
|
12.1
Symantec Endpoint Protection
|
11.0 RU7 MP2
NOTE: This DoS only impacts SEP 11.x running on Windows Server 2003, Service Pack 2 and below
Medium
CVSS2 Base Score: 4
Impact: 2.86 Exploitability 7.95
CVSS2 Vector AV: AV:N/AC:L/Au:S/C:N/I:N/A:P
Details
Symantec was notified of a Denial of Service(DoS) within the Symantec Endpoint Protection Manager 11.x and related maintenance packs to include SEP11 RU7 MP1 running on Windows Server 2003 SP2 and below.
A successful exploitation is possible when using audit tools to aggressively scan the targeted Symantec Endpoint Protection Manager host. After a period of heavy scanning the Network Threat Protection module responds to the perceived threat by blocking all subsequent traffic to the server. This can lead the server to stop serving pages and in some instances can cause excessive resource use which can lead to a hang or crash of the server.
This issue does not impact the security of the Symantec Endpoint Manager, only the availability of the web server components.
Workaround
Manually restarting the server and/or IIS service will remedy the situation.
Symantec Response
Symantec product engineers verified the reported issues. Symantec engineers fixed the issues in Symantec Endpoint Protection 11.0.7000 RU7 MP2.
Update Information
Updates will be available through customers' normal support/download locations.
Best Practices
As part of normal best practices, Symantec strongly recommends:
Symantec credits Greg Johnson of Clear Skies Security working through CERT/CC for reporting this issue.
Security Focus, http://www.securityfocus.com, has assigned a Bugtraq ID (BID) 50358 to this issue for inclusion in the Security Focus vulnerability database.
This issue is a candidate for inclusion in the Common Vulnerabilities and Exposures (CVE) list (http://cve.mitre.org). The CVE initiative has assigned CVE-2012-1821 to this issue.
5/23/2012 - Added 11.0 RU7(11.0.710x) to affected products
7/5/2012 - Following additional analysis and testing, added all releases of SEP 11.x prior to SEP 11.0 RU7 MP2 to Affected Products matrix