Oracle Java contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code.
The vulnerability is due to improper security protections imposed by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to follow a link that directs the user to a malicious site while using misleading language or instructions to persuade the user to follow the provided link. If successful, the attacker could execute arbitrary code on the system with the privileges of the user.
Functional code that exploits the vulnerability is publicly available and is being actively exploited in the wild.
Oracle has confirmed this vulnerability and software updates are available.
Indicators of Compromise
Oracle Java version 7 updates 11 and prior are vulnerable.
The vulnerability is due to insecure use of the invoke method of the java.lang.reflect.Method class in the Java Runtime Environment (JRE). As a result, an untrusted Java applet can be used to bypass the sandbox environment, which may allow remote code execution.
An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a website that contains a malicious Java applet. When viewed, the applet could take actions in the user's browser outside the security protections of the JRE sandbox. As a result, the attacker could execute arbitrary code on the system with the privileges of the user.
To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.
Functional code that exploits the vulnerability is publicly available and being actively exploited in the wild.
Administrators are advised to apply the appropriate updates.
Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.
Administrators are advised to monitor affected systems.
Red Hat has released updated software for registered subscribers at the following link: Red Hat Network. Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool. Red Hat Enterprise Linux versions 4 and earlier can be updated using the up2date tool.
Red Hat Enterprise Linux Workstation Supplementary
6 (IA-32, x86_64)
5 (IA-32, IA-64, PPC, PPC64, S390, S390x, x86_64)
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Cisco Multivendor Vulnerability Alerts respond to vulnerabilities identified in third-party vendors' products. These alerts contain information compiled from diverse sources and provide comprehensive technical descriptions, objective analytical assessments, workarounds and practical safeguards, and links to vendor advisories and patches.