ISS Protection Brief: RealNetworks RealPlayer chunked Transfer-Encoding buffer overflow

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Internet Security Systems Protection Alert
Date: 03/28/06

Title: RealNetworks RealPlayer chunked Transfer-Encoding buffer overflow

Summary:

Multiple versions of RealNetworks RealPlayer and RealOne Player are
vulnerable to a heap-based buffer overflow, caused by improper handling of
chunked Transfer-Encoded data. A remote attacker could create a
specially-crafted Web page containing embedded object tags that launch an
affected version of RealPlayer or RealOne Player. If a victim could be
persuaded to view the malicious page, the attacker could overflow a buffer
and execute arbitrary code on the victim's system.

Business Impact:

Compromise of the operating system can lead to exposure of confidential
information, loss of productivity, and further network compromise.
Successful exploitation of this vulnerability could be used to gain
unauthorized access to networks and machines. No authentication is
required for an attacker to leverage these vulnerabilities to
compromise a network or machine.

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