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Insecure Library Loading
Moderately critical

c-ares DNS Cache Poisoning Vulnerability

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Release Date:  2007-06-08    Last Update:  2007-06-14    Views:  10,674

Secunia Advisory SA25579

Where:

From remote

Impact:

Spoofing

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


A vulnerability has been reported in c-ares, which can be exploited by malicious people to poison the DNS cache.

The vulnerability is caused due to predictable DNS "Transaction ID" field in DNS queries and can be exploited to poison the DNS cache of an application using the library if a valid ID is guessed.

The vulnerability is reported in versions prior to 1.4.0.


Solution:
Update to version 1.4.0.

Provided and/or discovered by:
The vendor credits Amit Klein.

Original Advisory:
http://cool.haxx.se/cvs.cgi/curl/ares/CHANGES?rev=HEAD&content-type=text/vnd.viewcvs-markup

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: c-ares DNS Cache Poisoning Vulnerability

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