[Full-disclosure] ZDI-10-167: RealNetworks RealPlayer FLV Parsing Multiple Integer Overflow Vulnerabilities



ZDI-10-167: RealNetworks RealPlayer FLV Parsing Multiple Integer Overflow Vulnerabilities
http://www.zerodayinitiative.com/advisories/ZDI-10-167
August 26, 2010

-- CVE ID:
CVE-2010-3000

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:
RealNetworks

-- Affected Products:
RealNetworks RealPlayer

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 9402.
For further product information on the TippingPoint IPS, visit:

http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of RealNetworks RealPlayer. Authentication is
not required to exploit this vulnerability.

The specific flaw exists within the module responsible for handling the
FLV file format. While parsing the HX_FLV_META_AMF_TYPE_MIXEDARRAY and
the HX_FLV_META_AMF_TYPE_ARRAY data types the ParseKnownType function
makes two improper calculations that can force integers to wrap. A
remote attacker can exploit these vulnerabilities to execute arbitrary
code under the context of the user playing the file.

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

http://service.real.com/realplayer/security/08262010_player/en/

-- Disclosure Timeline:
2009-12-04 - Vulnerability reported to vendor
2010-08-26 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
* Sebastian Apelt, siberas

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

http://www.zerodayinitiative.com/advisories/disclosure_policy/

Follow the ZDI on Twitter:

http://twitter.com/thezdi

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/



Relevant Pages