Assurance.com.au has reported a vulnerability in Asterisk, which can be exploited by malicious users to disclose sensitive information.
Input passed to the "folder" parameter in "vmail.cgi" isn't properly sanitised before being used to open files. This can be exploited to disclose the content of arbitrary ".wav" files via directory traversal attacks (e.g. other users' voicemail messages).
Successful exploitation requires that the user is authenticated.
The vulnerability has been reported in versions 1.0.9 and 1.2.0-beta1, and prior.
Solution: The vulnerability has reportedly been fixed in the CVS repository.
Provided and/or discovered by: Assurance.com.au
Original Advisory: http://www.assurance.com.au/advisories/200511-asterisk.txt
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Subject: Asterisk "folder" Disclosure of Sound Files
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