[UNIX] Wireshark TFTP Dissector Denial of Service
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- Date: 31 Mar 2008 15:26:53 +0200
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Wireshark TFTP Dissector Denial of Service
------------------------------------------------------------------------
SUMMARY
A vulnerability in Wireshark allows remote attackers to cause the product
to crash by sending it a specially malformed TFTP packet. When Wireshark
takes this malformed packet and utilizes, under certain distributions, the
Cairo library to display its content the Cairo library will fail, which in
turn causes Wireshark to crash.
DETAILS
Vulnerable Systems:
* Wireshark version 0.6.0 up to and including Wireshark version 0.99.7
Immune Systems:
* Wireshark version 0.99.8
Recreation:
It is possible to recreate the scenario that triggers the crash using
beSTORM's TFTP module.
Impact:
It may be possible to make Wireshark or Ethereal crash or use up available
memory by injecting a purposefully malformed packet onto the wire or by
convincing someone to read a malformed packet trace file.
ADDITIONAL INFORMATION
The information has been provided by Beyond Security's beSTORM
<http://www.beyondsecurity.com/black-box-testing.html> black box testing
tool.
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