Symantec Altiris Deployment Solution TFTP/MTFTP Service Directory Traversal Vulnerability
10.31.07BACKGROUND
Symantec Altiris Deployment Solution is an automated OS deployment solution that is used for deploying and managing servers, desktops, and notebooks from a central location. More information is available on the vendor's site at the following URL.
http://www.altiris.com/Products/DeploymentSolution.aspx
DESCRIPTION
Remote exploitation of a directory traversal vulnerability in Symantec's Altiris Deployment Solution products could allow attackers to gain read access to arbitrary files hosted on the Altiris server.
Altiris Deployment Solution includes a tftp/mtftp server within its optional PXE server component which suffers from a directory traversal condition. The server runs with SYSTEM level privileges and allows unauthenticated attackers to download any file on the system.
ANALYSIS
Exploitation allows attackers to read arbitrary files from the server machine. The tftp/mftp daemon runs with SYSTEM level privileges, so any file readable by SYSTEM with a known file path can be downloaded without authentication.
DETECTION
iDefense confirmed the existence of this vulnerability in Altiris Deployment Solution for Windows version 6.8. The specific vulnerable executable is pxemtftp.exe version 6.8.8297.48.
WORKAROUND
If the PXE server component is not required in your environment it should be disabled.
VENDOR RESPONSE
Symantec Altiris has addressed this vulnerability by releasing a HotFix. More information is available in Symantec's advisory at the following URL.
http://www.symantec.com/avcenter/security/Content/2007.10.31.html
CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-3874 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.
DISCLOSURE TIMELINE
07/13/2007 Initial vendor notification
07/16/2007 Initial vendor response
10/31/2007 Public disclosure
CREDIT
This vulnerability was reported to iDefense by Manuel Santamarina Suarez.
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LEGAL NOTICES
Copyright © 2007 Verisign, Inc.
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