This update disables Adobe Flash Player 9 on Red Hat Enterprise Linux 4, as it contains multiple security flaws and should no longer be used. The Red Hat Security Response Team has rated this update as having critical security impact.
The flash-plugin package contains a Mozilla Firefox compatible Adobe Flash Player web browser plug-in. Adobe Flash Player 9 is vulnerable to critical security flaws and should no longer be used. A remote attacker could use these flaws to execute arbitrary code with the privileges of the user running Flash Player 9. (CVE-2011-0558, CVE-2011-0559, CVE-2011-0560, CVE-2011-0561, CVE-2011-0571, CVE-2011-0572, CVE-2011-0573, CVE-2011-0574, CVE-2011-0575, CVE-2011-0577, CVE-2011-0578, CVE-2011-0607, CVE-2011-0608) Adobe is no longer providing security updates for Adobe Flash Player 9, and is not providing a replacement Flash Player version compatible with Red Hat Enterprise Linux 4. This erratum disables Adobe Flash Player 9 to prevent it from functioning. User wishing to continue using Flash Player 9, despite the vulnerabilities, can add the flash-plugin package to the up2date skip list. Refer to the following Red Hat Knowledgebase article for instructions on adding a package to the up2date skip list: https://access.redhat.com/kb/docs/DOC-1639