16345 : qmail substdio_put Function Signedness Issue
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Info

Last Modified
8 months ago

Percent Complete
100%

Disclosure
May 06, 2005

Discovery
Unknown

Dates

Exploit
May 06, 2005

Solution
Unknown

Description

 A remote overflow exists in qmail when running on 64 bit platforms with 4GB of virtual memory or more. The 'substdio_put()' function fails to perform proper bounds checking resulting in an integer overflow. With a specially crafted request, a remote attacker can cause the qmail process to crash resulting in a loss of availability.

Classification

 Location: Remote/Network Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Available
Disclosure: OSVDB Verified

Solution

 Currently, there are no known upgrades, patches, or workarounds available to correct this issue.

Products
Daniel J. Bernstein
Watch-list
qmail
Watch-list
 1.03

References

Credit
  • Georgi Guninski - guninskiBrand New Doo Dooguninski.com - Personal Page

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