TFTP Server SP error message buffer overflow

tftpserversp-errormessage-bo (42298) The risk level is classified as HighHigh Risk

Description:

TFTP Server SP is vulnerable to a stack-based and BSS-based buffer overflow, caused by improper bounds checking when handling error messages. By sending a specially-crafted TFTP error packet containing an overly long error message to UDP port 69, 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: 9
  Exploitability: Functional
  Remediation Level: Unavailable
  Report Confidence: Uncorroborated

Consequences:

Gain Access

Remedy:

No remedy available as of September 1, 2014.

References:

  • SourceForge.net: TFTP Server.
  • BID-29111: TFTP Server Error Packet Handling Remote Buffer Overflow Vulnerability
  • CVE-2008-2161: Buffer overflow in TFTP Server SP 1.4 and 1.5 on Windows, and possibly other versions, allows remote attackers to execute arbitrary code via a long TFTP error packet. NOTE: some of these details are obtained from third party information.
  • OSVDB ID: 44904: TFTP Server SP Error Packet Handling Remote Overflow
  • SA30147: TFTP Server SP Long Error Message Buffer Overflow

Platforms Affected:

  • TFTP Server TFTP Server 1.4
  • TFTP Server TFTP Server 1.5

Reported:

May 08, 2008

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