Oracle Java MixerSequencer.nAddControllerEventCallback Remote Code Execution Vulnerability

October 26th, 2011
ZDI-11-307 ZDI-CAN-1218

CVE ID

CVE-2011-3545

CVSS Score

9.0 AV:N/AC:L/Au:N/C:P/I:P/A:C

Affected Vendors

Oracle

Affected Products

Java Runtime

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Oracle Java. 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 because Java does not sufficiently verify parameters certain functions. The function MixerSequencer.nAddControllerEventCallback fails to check for negative index numbers before writing user supplied data into a static array. This allows a malicious applet to write user controlled data outside the array boundaries resulting in remote code execution under the context of the current user.

Additional Details

Oracle has issued an update to correct this vulnerability. More details can be found at:
http://www.oracle.com/technetwork/topics/security/javacpuoct2011-443431.html

Disclosure Timeline

  • 2011-05-12 - Vulnerability reported to vendor
  • 2011-10-26 - Coordinated public release of advisory

Credit

axtaxt

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