TFTP Server filename buffer overflow

tftpserver-filename-bo (41496)

High Risk

Description:

TFTP Server is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. By sending a specially-crafted request containing an overly long filename, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the application to crash.

*CVSS:

Base Score:	10
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Complete
Integrity Impact:	Complete
Availability Impact:	Complete
Temporal Score:	8.3
Exploitability:	Functional
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of TFTP Server (1.5 or later), available from the SourceForge.net. See References.

References:

• Offensive Security Exploit Database [01-10-2012]: TFTP Server 1.4 ST (RRQ) Buffer Overflow Exploit.
• SourceForge.net: TFTP Server.
• BID-28462: TFTP Server Packet Handling Remote Buffer Overflow Vulnerability
• CVE-2008-1611: Stack-based buffer overflow in TFTP Server SP 1.4 for Windows allows remote attackers to cause a denial of service or execute arbitrary code via a long filename in a read or write request.
• SA29508: TFTP Server SP Long Filename Buffer Overflow Vulnerability

Platforms Affected:

• TFTP Server TFTP Server 1.4

Reported:

Mar 26, 2008

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For corrections or additions please email xforce@iss.net

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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 IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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