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TITLE:
RealNetworks Helix Server Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA33360

VERIFY ADVISORY:
http://secunia.com/advisories/33360/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Helix DNA Server 11.x
http://secunia.com/advisories/product/10627/
RealNetworks Helix Server 12.x
http://secunia.com/advisories/product/20891/
RealNetworks Helix Mobile Server 12.x
http://secunia.com/advisories/product/20893/

DESCRIPTION:
Some vulnerabilities have been reported in RealNetworks Helix Server,
which can be exploited by malicious people to cause a DoS (Denial of
Service) or to compromise a vulnerable system.

1) An unspecified error in the processing of RTSP DESCRIBE commands
can be exploited to cause a heap-based buffer overflow.

Successful exploitation allows execution of arbitrary code.

2) An unspecified error when parsing RTSP SETUP commands can be
exploited to cause stack-based buffer overflow via three consequent,
specially crafted requests to port 554 of an affected server.

3) An unspecified error in "DataConvertBuffer" can be exploited to
cause a heap-based buffer overflow and allows execution of arbitrary
code.

4) An unspecified error in the processing of Base64-encoded data in
"NTLM Authentication" can be exploited to cause a heap-based buffer
overflow and allows execution of arbitrary code.

The vulnerabilities have been reported in Helix Server version 11.x
and 12.x and Helix Mobile Server Version 11.x and 12.x.

SOLUTION:
Update to version 11.1.8 or version 12.0.1.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits TippingPoint and Noam Rathaus.

ORIGINAL ADVISORY:
RealNetworks:
http://docs.real.com/docs/security/SecurityUpdate121508HS.pdf

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