Advisory Details

October 16th, 2013

Oracle Java ObjectOutputStream Sandbox Bypass Remote Code Execution Vulnerability

ZDI-13-246
ZDI-CAN-1880

CVE ID CVE-2013-5842
CVSS SCORE 10, (AV:N/AC:L/Au:N/C:C/I:C/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 within the usage of ObjectOutputStream. With the usage of this class, it is possible to disable the security manager and run code 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 Oracle has issued an update to correct this vulnerability. More details can be found at:
http://www.oracle.com/technetwork/topics/security/cpuoct2013-1899837.html
DISCLOSURE TIMELINE
  • 2013-05-14 - Vulnerability reported to vendor
  • 2013-10-16 - Coordinated public release of advisory
CREDIT Ben Murphy
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