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Fetchmail Large Header Processing Denial of Service
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Secunia Advisory:
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SA30742
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Release Date:
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2008-06-18
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Last Update:
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2008-06-25
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Popularity:
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2,079 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Fetchmail 6.x
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| CVE reference: | CVE-2008-2711
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Description:
Some vulnerabilities have been reported in Fetchmail, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerabilities are caused due to errors in the "report_build()" and "report_complete()" functions when printing overly large e-mail headers (over 2048 bytes) and can be exploited to crash the application.
Successful exploitation requires that Fetchmail is started with high verbosity (two or more "-v" arguments are used).
The vulnerabilities are reported in versions prior to 6.3.9.
Solution:
Update to version 6.3.9 as soon as available or apply patch for version 6.3.8. Please see vendor's advisory for more details.
Provided and/or discovered by:
The vendor credits Gunter Nau and Petr Uzel.
Changelog:
2008-06-25: Updated "Description" section and credits due to an updated advisory from the vendor. A new patch is also included in the vendor's advisory.
Original Advisory:
http://www.fetchmail.info/fetchmail-SA-2008-01.txt
Extended Solution:
The "Extended Solution" section is available for Secunia customers only. Request a trial and get access to the Secunia Customer Area and Extended Secunia advisories.
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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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