Apple has informed AppleCare representatives and Apple Retail that it has updated the Safari web browser’s built-in plugin blocker to disable older versions of Oracle’s Java 6 and 7 software.
In recent days, a new Java vulnerability was discovered. The latest issue is described on the National Vulnerability Database:
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 21 and earlier, 6 Update 45 and earlier, and 5.0 Update 45 and earlier, and OpenJDK 7, allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to 2D. NOTE: the previous information is from the June 2013 CPU. Oracle has not commented on claims from another vendor that this issue allows remote attackers to bypass the Java sandbox via vectors related to “Incorrect image attribute verification” in 2D.
The issue could allow a hacker to input malicious code into a user’s web browser, and it has been rated as a flaw of “extreme importance.”
To project Safari users, Apple has blocked Java 6 versions below update 51, and Java 7 versions below update 25.