Adam Gowdiak (Security Explorations) reported that the fix for IBM JDK issue CVE-2013-5456 (bug 1027748), also known as "Issue 70", did not correctly address the problem. Applied fix only restricted access to the vulnerable package, rather then addressing the underlying problem of running untrusted code inside doPrivileged block.

Report:

http://seclists.org/fulldisclosure/2016/Apr/43

Write-up of the issue:

http://www.security-explorations.com/materials/SE-2012-01-IBM-5.pdf

Proof-of-concept code:

http://www.security-explorations.com/materials/se-2012-01-70.2.zip

It was reported that the IBM fix for the issue 67 from this document http://www.security-explorations.com/materials/SE-2012-01-IBM-2.pdf didn't address the problem properly.

References:

http://seclists.org/fulldisclosure/2016/Apr/3

Full report:

http://www.security-explorations.com/materials/SE-2012-01-IBM-4.pdf

A buffer overflow flaw was fixed in IBM JDK 6 SR16-FP25, 7 SR9-FP40, 7R1 SR3-FP40, and 8 SR3:

CVEID: CVE-2016-0264 DESCRIPTION: A buffer overflow vulnerability in the IBM JVM facilitates arbitrary code execution under certain limited circumstances. CVSS Base Score: 5.6 CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L)

http://www-01.ibm.com/support/docview.wss?uid=swg21980826

External Reference:

http://www.ibm.com/developerworks/java/jdk/alerts/#IBMSecurityUpdateApril2016