Advisory Details

April 2nd, 2010

Mozilla Firefox libpr0n imgContainer Bits-Per-Pixel Change Remote Code Execution Vulnerability

ZDI-10-047
ZDI-CAN-693

CVE ID CVE-2010-0164
CVSS SCORE 10.0, (AV:N/AC:L/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS Mozilla Firefox
AFFECTED PRODUCTS 3.6.x
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9620. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. 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 the libpr0n library which is responsible for handling image caching and animation and is due to the way the application handles animations received from the server via the multipart/x-mixed-replace mimetype. During a case where the bits-per-pixel changes, the application will free a pointer and then can be made to reuse the freed pointer later. This can lead to code execution under the context of the application.

ADDITIONAL DETAILS Mozilla Firefox has issued an update to correct this vulnerability. More details can be found at:
http://www.mozilla.org/security/announce/2010/mfsa2010-09.html
DISCLOSURE TIMELINE
  • 2010-02-18 - Vulnerability reported to vendor
  • 2010-04-02 - Coordinated public release of advisory
CREDIT regenrecht
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