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Perl Net::DNS Module Two Vulnerabilities
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Secunia Advisory:
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SA25829
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Release Date:
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2007-06-27
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Popularity:
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5,105 views
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Critical:
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Less critical
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Impact:
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Spoofing
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: | Net::DNS 0.x (module for Perl)
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Subscribe:
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| CVE reference: | CVE-2007-3377
CVE-2007-3409
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Description:
Two vulnerabilities have been reported in the Net::DNS Perl module, which can be exploited to poison the DNS cache or to cause a DoS (Denial of Service).
1) An error exists in the handling of DNS queries where IDs are incremented with a fixed value and are additionally used for child processes in a forking server. This can be exploited to poison the DNS cache of an application using the module if a valid ID is guessed.
2) An error in the PP implementation within the "dn_expand()" function can be exploited to cause a stack overflow due to an endless loop via a specially crafted DNS packet.
The vulnerabilities are reported in versions prior to 0.60.
Solution:
Update to version 0.60.
Provided and/or discovered by:
The vendor credits:
1) hjp
2) Steffen Ullrich
Original Advisory:
http://www.net-dns.org/docs/Changes.html
http://rt.cpan.org/Public/Bug/Display.html?id=23961
http://rt.cpan.org/Public/Bug/Display.html?id=27285
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