Symantec Scan Engine File Disclosure Vulnerability

2006.04.23
Risk: Low
Local: Yes
Remote: Yes
CWE: CWE-Other


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

_______________________________________________________________________ Rapid7, LLC Security Advisory _______________________________________________________________________ Rapid7 Advisory R7-0023 Symantec Scan Engine File Disclosure Vulnerability Published: April 21, 2006 Revision: 1.0 http://www.rapid7.com/advisories/R7-0023.html CVE: CVE-2006-0232 1. Affected system(s): KNOWN VULNERABLE: o Symantec Scan Engine v5.0.0.24 KNOWN FIXED: o Symantec Scan Engine v5.1.0.7 UNKNOWN (PROBABLY VULNERABLE): o All v5.0.x.x o Earlier versions 2. Summary There is a vulnerability in Symantec Scan Engine which allows unauthenticated remote users to download any file located under the Symantec Scan Engine installation directory. For instance the configuration file, the scanning logs, as well as the current virus definitions can all be accessed by any remote user using regular or specially crafted HTTP requests. NeXpose, Rapid7's award-winning vulnerability assessment platform, checks for this vulnerability and other vulnerabilities we have discovered in Symantec Scan Engine. Visit http://www.rapid7.com to register for a free demo of NeXpose. 3. Vendor status and information Symantec Corporation http://www.symantec.com Symantec was notified of this vulnerability on January 17, 2006. They acknowledged the vulnerability, then provided us with a fixed version. Rapid7's advisory was publicly released on April 21, 2006. 4. Solution Upgrade to Symantec Scan Engine v5.1.0.7 or later. Another option is to disable the web interface of the scan engine by logging in, setting the TCP port from 8004 to 0, and then restarting the Scan Engine. 5. Detailed analysis Symantec Scan Engine stores multiple files inside its web root (the default directory is "C:Program FilesSymantecScan Engine"). Most of the files are accessible by any unauthenticated user via regular URLs. For example the following URLs will download the log and corresponding data file for October 17th, 2005: http://x.x.x.x:8004/log/SSE20051017.log http://x.x.x.x:8004/log/SSE20051017.dat In the same way, virus definitions can be accessed from: http://x.x.x.x:8004/Definitions/AntiVirus/VirusDefs/VIRSCAN1.DAT http://x.x.x.x:8004/Definitions/AntiVirus/VirusDefs/VIRSCAN2.DAT Such sensitive knowledge of installed virus definitions will allow an attacker to determine what viruses can be used to infect the network without detection. Files ending with the '.xml' extension are protected by the HTTP daemon. However, the protection can be easily defeated by appending a trailing backslash to the filename. For example the configuration file configuration.xml, which contains the administrator's password hash, can be accessed by the following HTTP request: GET /configuration.xml HTTP/1.0 The above request will yield the following configuration snippet: <system> <TempDir value="C:Program FilesSymantecScan Enginetemp"/> [...] <InstallDir value="C:Program FilesSymantecScan Engine"/> <LoadMaximumQueuedClients value="100"/> <admin> <port value="8004"/> <sslport value="8005"/> <ip value=""/> <timeout value="300"/> <password value= "8369951FB31356D389FBEE4B52F6A7BB51AAE8FBE4B8DB29D249F347C3426D19"/> </admin> </system> 6. Credit This vulnerability was discovered by Joe Testa of Rapid7. 7. Contact Information Rapid7, LLC Email: advisory (at) rapid7 (dot) com [email concealed] Web: http://www.rapid7.com Phone: +1 (617) 247-1717 8. Disclaimer and Copyright Rapid7, LLC is not responsible for the misuse of the information provided in our security advisories. These advisories are a service to the professional security community. There are NO WARRANTIES with regard to this information. Any application or distribution of this information constitutes acceptance AS IS, at the user's own risk. This information is subject to change without notice. This advisory Copyright (C) 2006 Rapid7, LLC. Permission is hereby granted to redistribute this advisory, providing that no changes are made and that the copyright notices and disclaimers remain intact.


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