Advisory Details

May 10th, 2013

Oracle Java GSUB TTF Table LookupCount Remote Code Execution Vulnerability

ZDI-13-068
ZDI-CAN-1685

CVE ID CVE-2013-2384
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 the 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 fontmanager native component. There is a vulnerability when processing GSUB tables having an overlarge "LookupCount" sum in a TTF file, which can result in memory corruption. 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/javacpuapr2013-1928497.html
DISCLOSURE TIMELINE
  • 2012-12-10 - Vulnerability reported to vendor
  • 2013-05-10 - Coordinated public release of advisory
CREDIT Alin Rad Pop
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