CVE-2012-0503 in JRE
Summary
by MITRE
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 2 and earlier, 6 Update 30 and earlier, 5.0 Update 33 and earlier, and 1.4.2_35 and earlier allows remote untrusted Java Web Start applications and untrusted Java applets to affect confidentiality, integrity, and availability, related to I18n.
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Analysis
by VulDB Data Team • 11/30/2021
The vulnerability identified as CVE-2012-0503 represents a critical security flaw within Oracle Java Runtime Environment components affecting multiple versions of Java SE. This issue resides within the internationalization (I18n) functionality of the Java platform, specifically impacting Java Web Start applications and applets that operate in untrusted environments. The vulnerability's classification as unspecified indicates that the exact technical details of the flaw were not fully disclosed in the initial advisory, though the implications for system security were clearly understood by Oracle and the broader security community. The affected versions span across Java 7, 6, 5.0, and 1.4.2 releases, demonstrating the widespread nature of this vulnerability across the Java ecosystem.
The technical flaw manifests through the improper handling of internationalization features within the Java Runtime Environment, creating potential attack vectors for malicious actors to exploit when executing untrusted Java content. This vulnerability specifically targets the way Java processes internationalized text and character encoding, allowing attackers to potentially bypass security restrictions that should normally isolate untrusted code from the underlying system. The I18n-related nature of the vulnerability suggests that the flaw may involve improper validation or processing of locale-specific data, character sets, or encoding transformations that could be manipulated to execute arbitrary code or access restricted resources. The vulnerability's impact extends across confidentiality, integrity, and availability domains, indicating it could enable data theft, system compromise, and service disruption. This aligns with CWE-254, which addresses security weaknesses related to improper handling of internationalization features, and represents a significant concern for the ATT&CK framework's privilege escalation and code execution techniques.
The operational impact of CVE-2012-0503 is substantial for organizations relying on Java-based applications and web services, particularly those that enable Java applets or Web Start functionality in browser environments. Attackers could leverage this vulnerability to execute malicious code on target systems, potentially leading to complete system compromise, data exfiltration, or denial of service conditions. The vulnerability's remote exploitation capability means that attackers do not need physical access to target systems, making it particularly dangerous for enterprise environments where users may unknowingly interact with malicious Java content through web browsers or desktop applications. Organizations using older Java versions are especially vulnerable since these releases have reached end-of-life support status, leaving them without security patches or updates. The widespread use of Java across enterprise applications, web services, and desktop environments means that exploitation of this vulnerability could affect numerous systems simultaneously, creating cascading security incidents.
Mitigation strategies for CVE-2012-0503 should prioritize immediate patching of affected Java installations to the latest supported versions, as Oracle has released security updates addressing this vulnerability. Organizations should implement strict Java security policies that disable untrusted applet execution and Web Start functionality in browser environments. Network-level controls such as firewall rules and content filtering can help prevent access to potentially malicious Java content. Security administrators should also consider implementing application whitelisting policies to restrict execution of Java applications to known good software only. The vulnerability's classification as a critical issue warrants immediate attention from security teams, with regular monitoring for similar I18n-related vulnerabilities in Java components. Additionally, organizations should conduct comprehensive vulnerability assessments to identify any remaining systems running unsupported Java versions and ensure complete remediation across all environments. The remediation approach should align with industry best practices for Java security management and incorporate regular security assessments to prevent similar vulnerabilities from emerging in the future.