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Helix Universal Server Remotely Exploitable Vulnerability Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA9593  
Release Date: 2003-08-25
Last Update: 2003-09-15

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:Helix Universal Server 9.x
RealServer G2
RealSystem Server 7
RealSystem Server 8

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Description:
A vulnerability has been reported in Helix Universal Server, RealServer, and RealSystem Server possibly allowing malicious people to gain system access.

The problem is that "vsrcplin.so.9.0" / "vsrcplin.so.6.0" / "vsrc3260.dll" plugins fails to handle long requests. This may allow malicious people to execute arbitrary code.

Solution:
Updated versions are available:

Tru64
http://forms.real.com/rnforms/product...ic&version=Helix+Universal+Server

FreeBSD
http://forms.real.com/rnforms/product...ic&version=Helix+Universal+Server

HP UX
http://forms.real.com/rnforms/product...ic&version=Helix+Universal+Server

IBM AIX
http://forms.real.com/rnforms/product...ic&version=Helix+Universal+Server

Linux
http://forms.real.com/rnforms/product...ic&version=Helix+Universal+Server

Solaris 2.7
http://forms.real.com/rnforms/product...ic&version=Helix+Universal+Server

Solaris 2.8
http://forms.real.com/rnforms/product...ic&version=Helix+Universal+Server

Windows
http://forms.real.com/rnforms/product...ic&version=Helix+Universal+Server

Provided and/or discovered by:
Dave Aitel, Immunity

Changelog:
2003-08-25: Updated credits. Updated with link to Dave Aitel's advisory.
2003-08-29: Updated the file names due to changes in the original Real advisory.
2003-08-31: Added link to CERT vulnerability note in "Other References" section.
2003-09-15: Added information about updated versions.

Original Advisory:
http://www.service.real.com/help/faq/security/rootexploit082203.html
http://lists.immunitysec.com/pipermail/dailydave/2003-August/000030.html
http://www.service.real.com/help/faq/security/rootexploit091103.html

Other References:
CERT:
http://www.kb.cert.org/vuls/id/934932



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

4 Related Secunia Security Advisories

1. RealNetworks Helix Universal Server Denial of Service Vulnerability
2. Helix Universal Server HTTP Request Handling Denial of Service
3. Helix Administrative Interface HTTP POST Request Handling Vulnerability
4. Helix Universal Server buffer overrun


Send Feedback to Secunia

If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

Ideas, suggestions, and other feedback are most welcome.








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