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Secunia Network Software Inspector 2.0 (NSI) - Public Beta

The Public Beta has ended. Thanks to all that participated.

Learn more:
http://secunia.com/network_software_inspector_2/

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TITLE:
TFTP Server SP Long Error Message Buffer Overflow

SECUNIA ADVISORY ID:
SA30147

VERIFY ADVISORY:
http://secunia.com/advisories/30147/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From local network

SOFTWARE:
TFTP Server SP 1.x
http://secunia.com/product/18058/

DESCRIPTION:
tixxDZ has discovered a vulnerability in TFTP Server SP, which can be
exploited by malicious people to cause a DoS or compromise a
vulnerable system.

The vulnerability is caused due to a boundary error in the handling
of error messages and can be exploited to cause a BSS-based or
stack-based buffer overflow via an error packet with an overly long
error message.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in the Windows version of TFTP Server
SP version 1.4 and 1.5. Other versions may also be affected.

SOLUTION:
Restrict network access to the TFTP service.

PROVIDED AND/OR DISCOVERED BY:
tixxDZ

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/5563

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
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