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TFTP Server MT Absolute Path Construction Buffer Overflow
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Secunia Advisory:
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SA21844
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Release Date:
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2006-09-12
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Last Update:
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2007-03-13
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Popularity:
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5,928 views
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Critical:
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Moderately critical
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Impact:
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DoS
System access
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Where:
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From local network
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Solution Status:
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Unpatched
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| Software: | TFTP Server MT 1.x
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| CVE reference: | CVE-2006-4781
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Description:
n00b has discovered a vulnerability in TFTP Server MT, which potentially can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a boundary error when constructing the absolute path to a requested resource. This can be exploited to cause a heap-based buffer overflow by supplying an overly long string (about 260 bytes) as a resource in a request.
Successful exploitation may allow execution of arbitrary code.
The vulnerability is confirmed in versions 1.1 and 1.3. Other versions may also be affected.
Solution:
Restrict use of the TFTP service to trusted networks only.
Provided and/or discovered by:
n00b
Changelog:
2006-09-18: Added CVE reference.
2007-03-13: Added new vulnerable version in "Description" section.
Original Advisory:
http://milw0rm.com/exploits/2334
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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