RealNetworks Helix Server x-wap-profile Format String Remote Code Execution Vulnerability

April 1st, 2011
ZDI-11-114 ZDI-CAN-921

CVE ID

CVE-2010-4235

CVSS Score

10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Vendors

RealNetworks

Affected Products

Helix Server

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Helix Server products. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the rmserver.exe process. This process is active by default on all Helix Server installations. Due to a failure to properly sanitize the contents of the 'x-wap-profile' header, it is possible to provide malicious data that is passed directly to a format string function. Remote attackers could leverage this vulnerability to execute arbitrary code under the context of the SYSTEM user.

Additional Details

RealNetworks has issued an update to correct this vulnerability. More details can be found at:
http://www.realnetworks.com/helix-support/security-updates.aspx

Disclosure Timeline

  • 2010-10-02 - Vulnerability reported to vendor
  • 2011-04-01 - Coordinated public release of advisory

Credit

defrost

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