Symantec Norton AntiVirus POPROXY username denial of service
| nav-poproxy-username-dos (10085) |  Low Risk |
Description:
Norton AntiVirus has a POP3 proxy service (POPROXY), which is used to check incoming messages for viruses before they arrive in a user's mailbox. The POPROXY service in Norton AntiVirus 2001 and possibly other versions are vulnerable to a denial of service attack. If an email client is configured to log into the Norton POP3 proxy with an overly long username that consists of multiple /localhost entries, an attacker could cause the system to consume 100% of the CPU resources and cause the POPROXY service to eventually crash. The POPROXY service must be restarted before the affected user would be able to check their mail.
Platforms Affected:
- Symantec, Norton AntiVirus 2001
Remedy:
Upgrade to a newer version of Norton AntiVirus (2002 or later), available from the Symantec's Web site. See References.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Thu Sep 19 2002 - 12:49:48 CDT, http://online.securityfocus.com/archive/1/291358/2002-09-08/2002-09-14/0, Subj: Norton AintiVirus 2001 POPROXY DoS at http://archives.neohapsis.com/archives/bugtraq/2002-09/0240.html.
- BugTraq Mailing List, Wed Sep 11 2002 - 06:05:45 CDT, Norton AntiVirus 2001 POP3 Proxy local DoS at http://archives.neohapsis.com/archives/bugtraq/2002-09/0112.html.
- Symantec Web site, Symantec Purchase at http://www.symantec.com/purchase/.
- BID-5692: Norton Antivirus 2001 Poproxy Username Local Denial of Service Vulnerability
- CVE-2002-2206: The POP3 proxy service (POPROXY.EXE) in Norton AntiVirus 2001 allows local users to cause a denial of service (CPU consumption and crash) via a long username with multiple /localhost entries.
Reported:
Sep 11, 2002
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
Copyright (c) 1994-2008 Internet Security Systems, Inc. All rights reserved worldwide.
For corrections or additions please email xforce@iss.net