Home page logo
/

bugtraq logo Bugtraq mailing list archives

ZDI-11-337 : RealNetworks RealPlayer RV30 Uninitialized Index Value Remote Code Execution Vulnerability
From: ZDI Disclosures <zdi-disclosures () tippingpoint com>
Date: Mon, 28 Nov 2011 12:21:50 -0600

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

ZDI-11-337 : RealNetworks RealPlayer RV30 Uninitialized Index Value
Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-11-337
November 28, 2011

- -- CVE ID:
CVE-2011-4256

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

- -- Affected Vendors:

RealNetworks



- -- Affected Products:

RealNetworks RealPlayer



- -- 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 within how the application parses sample data
encoded with the RV30 codec. When parsing this sample data, the
application will make an allocation and then fail to completely
initialize the buffer. During decoding of the sample data, the
application will explicitly trust an index from the partially filled
buffer and then use that to calculate an address to write to. This can
lead to memory corruption which can be converted into 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/11182011_player/en/



- -- Disclosure Timeline:
2011-08-12 - Vulnerability reported to vendor
2011-11-28 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:

* Damian Put



- -- 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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.17 (MingW32)

iQEcBAEBAgAGBQJO09E9AAoJEFVtgMGTo1scph8IAKx0HmcXL55RkDMx2jAIgFxy
hfLV3Ex9jAuGwsQev3DrZ52zF+uQ6GHnJtV039MZWUJ+nrb0MyTVtlJfVoPFnVQe
LHUGzQk2Z5UxdY2inhJxu53UBkFZ6tDP6OgxRH5hPxE/38hjnkhAeXPpzYZMoky2
xG1wJew+NAdRUv80P2U54lOxrxxKhoaFleRNS3brkiKmjdmH6DnXgW/OsxUqo2Ci
L3seZN75XhlXXVWQNr4QbqUG17nnWTu18C5+++npwZdPMfXr9lkZQz6A2BrZaPKI
ZYg64jY0vj6XSE2wAj6mSXCEx7oWJDpAVHSP1JLA/LgkFg1aC65dEPVp8NabpqA=
=HEIA
-----END PGP SIGNATURE-----


  By Date           By Thread  

Current thread:
  • ZDI-11-337 : RealNetworks RealPlayer RV30 Uninitialized Index Value Remote Code Execution Vulnerability ZDI Disclosures (Nov 28)
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]
AlienVault