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TITLE:
Perlbal Chunked Uploads Denial of Service and Directory Traversal

SECUNIA ADVISORY ID:
SA29565

VERIFY ADVISORY:
http://secunia.com/advisories/29565/

CRITICAL:
Moderately critical

IMPACT:
Exposure of sensitive information, DoS

WHERE:
>From remote

SOFTWARE:
Perlbal 1.x
http://secunia.com/product/18117/

DESCRIPTION:
Some vulnerabilities have been reported in Perlbal, which can be
exploited by malicious people to disclose potentially sensitive
information or cause a DoS (Denial of Service).

1) An error exists within lib/Perlbal/ClientProxy.pm when handling
chunked uploads with a length of zero. This can be exploited to crash
the service by sending specially crafted requests.

Successful exploitation may require that "buffer_uploads" is
enabled.

2) Certain input is not properly sanitised within the
"_serve_request_multiple()" function in
lib/Perlbal/ClientHTTPBase.pm. This can be exploited to perform a
single upward directory traversal and disclose potentially sensitive
information by sending specially crafted requests to the service.

The vulnerabilities are reported in versions prior to 1.70.

SOLUTION:
Update to version 1.70.

PROVIDED AND/OR DISCOVERED BY:
1) Jeremey James
2) hachi

ORIGINAL ADVISORY:
http://search.cpan.org/src/BRADFITZ/Perlbal-1.70/CHANGES

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