ZDI-07-063: RealPlayer RA Field Size File Processing Heap Oveflow Vulnerability

ZDI-07-063: RealPlayer RA Field Size File Processing Heap Oveflow
October 25, 2007

-- CVE ID:

-- Affected Vendor:
RealNetworks RealPlayer version 10.5

-- Affected Products:
RealPlayer 6.x

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since April 26, 2007 by Digital Vaccine protection
filter ID 5214. For further product information on the TippingPoint IPS:


-- Vulnerability Details:
This vulnerability allows remote attackers to execute code on vulnerable
installations of RealPlayer. User interaction is required in that a
user must open a malicious .ra/.ram file or visit a malicious web

The specific flaw exists during the parsing of files with improperly
defined size field in the RA header. Specifying a large unsigned value
data can trigger a heap corruption and further result in arbitrary code
execution under the context of the logged in user.

-- Vendor Response:
RealNetworks has issued an update to correct this vulnerability. More
details can be found at:


-- Disclosure Timeline:
2007.02.16 - Vulnerability reported to vendor
2007.04.26 - Digital Vaccine released to TippingPoint customers
2007.10.25 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by an anonymous researcher.

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