ZDI-11-341 : Cisco WebEx Player WRF Type 0 Parsing Remote Code Execution Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

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

ZDI-11-341 : Cisco WebEx Player WRF Type 0 Parsing Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-11-341
December  7, 2011

- -- CVE ID:
CVE-2011-3319

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

- -- Affected Vendors:

Cisco



- -- Affected Products:

Cisco WebEx



- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Cisco WebEx 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 atdl2006.dll. The vulnerability is
caused by lack of validation when parsing WRF files. A specially crafted
WRF file will cause the application to incorrectly push a size value to
a memcpy, allowing for corruption of heap memory. An attacker can
leverage this vulnerability to execute arbitrary code on the target
system under the context of the current user.

- -- Vendor Response:

Cisco has issued an update to correct this vulnerability. More details
can be found at:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20111026-webex



- -- Disclosure Timeline:
2011-05-25 - Vulnerability reported to vendor
2011-12-07 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:

* Aniway (Aniway.Anyway@xxxxxxxxx)



- -- 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)

iQEcBAEBAgAGBQJO3979AAoJEFVtgMGTo1scIYcH/0bk/O3rRzP2gmFJ6EsZLYJa
llyzxkL7F9/Uyp9IMhJKURV6kd7+xKKi2Sd0Q5SHme7BksqxD0Yop+IzJ82Fbrd1
wzakpZoXWnmulByvbpQlwsVzJPJJvnNMfb+kZropLHc1VWlZzQYM0DJ9coU7o8RQ
/1A+xKa5vjx/xsgE7whGJW++t0SkisL/NQHTTDPCxdkZTbBqwCmWzU6T60PFtO6C
OffOCWQIUkNW6B9atqOl1OrWPjlRAIOxlca7Cs1ejOc6B+0/ReSfK4jcKiksJ2br
ujd4tetoJQoldnV8+1wLL7vAWfa9zmN//0JBq5gbc1e2K3LGHQ8M8ECpb5dNhFs=
=1Yyu
-----END PGP SIGNATURE-----