Oracle Java Proxy.newProxyInstance Security Manager Bypass Remote Code Execution Vulnerability

March 22nd, 2013
ZDI-13-040 ZDI-CAN-1706

CVE ID

CVE-2013-1484

CVSS Score

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

Affected Vendors

Oracle

Affected Products

Java Runtime

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of the Oracle Java. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or run a malicious file.

The specific bypass of security permissions is possible via invocation of Proxy.newProxyInstance. It is possible to run user callbacks that don't have higher privileges as privileged. This allows a malicious applet to execute attacker-supplied code resulting in remote code execution under the context of the current user.

Additional Details


http://www.oracle.com/technetwork/topics/security/javacpufeb2013update-1905892.html


Disclosure Timeline

  • 2012-12-10 - Vulnerability reported to vendor
  • 2013-03-22 - Coordinated public release of advisory

Credit

Ben Murphy

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