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Zero Day Initiative Advisory 12-195

Zero Day Initiative Advisory 12-195
Posted Dec 22, 2012
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 12-195 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of RealNetworks Real Player. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists when the application attempts to decode an audio sample that is encoded with the ATRAC codec. While parsing sample data, the application will explicitly trust 2-bits as a loop counter which can be used to write outside the bounds of the target buffer. This can lead to code execution under the context of the application.

tags | advisory, remote, arbitrary, code execution
advisories | CVE-2012-0928
MD5 | 490def262dd87a99054b1823911c91e3

Zero Day Initiative Advisory 12-195

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ZDI-12-195 : RealNetworks RealPlayer ATRAC Sample Decoding Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-195
December 21, 2012

- -- CVE ID:
CVE-2012-0928

- -- CVSS:
7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P

- -- 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 12482.
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 Real Player. User interaction is
required to exploit this vulnerability in that the target must visit a
malicious page or open a malicious file.

The specific flaw exists when the application attempts to decode an audio
sample that is encoded with the ATRAC codec. While parsing sample data, the
application will explicitly trust 2-bits as a loop counter which can be
used to write outside the bounds of the target buffer. This can lead to
code execution under the context of the application.

- -- Vendor Response:
RealNetworks has issued an update to correct this vulnerability. More
details can be found at:
http://service.real.com/realplayer/security/09072012_player/en/


- -- Disclosure Timeline:
2011-10-28 - Vulnerability reported to vendor
2012-12-21 - Coordinated public release of advisory


- -- Credit:
This vulnerability was discovered by:
* Andrzej Dyjak


- -- 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

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