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qmail Memory Corruption Vulnerability
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Secunia Advisory:
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SA15533
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Release Date:
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2005-05-31
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Last Update:
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2006-02-01
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Popularity:
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8,119 views
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Critical:
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Less critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Workaround
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| Software: | qmail 1.x
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| CVE reference: | CVE-2005-1514
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Description:
Georgi Guninski has reported a vulnerability in qmail, which can be exploited by malicious people to compromise a vulnerable system.
A signedness error in the "commands()" function in commands.c can be exploited to corrupt memory via specially crafted data passed via qpopup/qpop3d or potentially qmail-smtpd.
Successful exploitation allows execution of arbitrary code, but only affects 64-bit systems with about 10GB of virtual memory.
Various types of other errors, which also potentially can be exploited to execute code, have also been reported.
The vulnerability has been reported in version 1.0.3. Other versions may also be affected.
Solution:
Set proper per-process memory limits.
Provided and/or discovered by:
Georgi Guninski
Changelog:
2006-02-01: Added CVE reference.
Original Advisory:
Georgi Guninski:
http://www.guninski.com/where_do_you_want_billg_to_go_today_4.html
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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.
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