Oracle Java contains multiple vulnerabilities that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.
Java SE 7 Update 7 mitigates a widely reported vulnerability, CVE-2012-4681, as described in Alert 26751. The update also mitigates two remote code execution vulnerabilities that are due to unspecified errors in the affected software. The three vulnerabilities can be exploited only through untrusted Java Web Start applications and untrusted Java applets on client deployments of the affected software. In addition, a security-in-depth issue in the Abstract Window Toolkit (AWT) has also been addressed. Direct exploitation of the AWT security-in-depth issue is not possible; however, the issue can be used to aggravate security vulnerabilities that can be directly attacked.
To exploit these vulnerabilities, an unauthenticated, remote 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. 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.
Functional code that exploits these vulnerabilities is publicly available as part of the Metasploit Framework and, reports indicate, the Blackhole Exploit Kit.
The following Java products are vulnerable:
Java Development Kit (JDK) and Java Runtime Environment (JRE) versions 7 update 6 and prior
JDK and JRE versions 6 update 34 and prior
Oracle has released a security alert to address these vulnerabilities at the following link: CVE-2012-4681
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 Workstation Supplementary
6 (IA-32, x86_64)
5 (IA-32, 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.