CVE-2012-1682 in Java JRE
Summary
by MITRE
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 6 and earlier allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Beans, a different vulnerability than CVE-2012-3136. NOTE: Oracle has not commented on claims from a downstream vendor that this issue is related to "XMLDecoder security issue via ClassFinder."
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Analysis
by VulDB Data Team • 04/19/2017
The vulnerability identified as CVE-2012-1682 represents a significant security flaw within Oracle's Java Runtime Environment that affects Java SE 7 Update 6 and earlier versions. This issue resides within the Beans component of the JRE, which is a core part of Java's component architecture designed to facilitate the creation and manipulation of JavaBeans. The vulnerability's classification as unspecified means that the exact technical mechanism remains partially obscured, though it is confirmed to be distinct from CVE-2012-3136, which specifically addressed XMLDecoder vulnerabilities. The security implications are particularly concerning as the flaw potentially enables attackers to compromise all three fundamental security principles: confidentiality through data theft, integrity by modifying system data, and availability by disrupting services.
The technical nature of this vulnerability stems from the Beans component's handling of serialized objects, particularly in how it processes class loading and deserialization operations. The Beans framework in Java provides mechanisms for creating and using reusable software components, but when combined with the XMLDecoder functionality that processes serialized data, it creates potential attack surfaces. The connection to XMLDecoder security issues, as noted by downstream vendors, suggests that the vulnerability may be exploited through malicious serialized data that leverages the ClassFinder mechanism to load and execute arbitrary code. This aligns with common patterns seen in deserialization vulnerabilities where attacker-controlled input can trigger unintended code execution through the Java class loading system.
From an operational perspective, this vulnerability presents a severe risk to enterprise environments that rely on older Java versions, as it allows remote attackers to gain unauthorized access to systems without requiring authentication or specific local privileges. The impact extends across multiple security domains since attackers could potentially steal sensitive data, modify system configurations, or cause system downtime through various attack vectors. The vulnerability's remote exploitability means that systems exposed to the internet are particularly at risk, especially web applications that process user input through Java serialization mechanisms. Organizations running affected Java versions face potential compromise of their entire Java-based application environments, as the flaw exists at the core runtime component level.
Security mitigations for CVE-2012-1682 primarily focus on immediate patching and version updates to Oracle Java SE 7 Update 7 or later versions where the vulnerability has been addressed. System administrators should implement network segmentation to limit exposure of Java applications to untrusted networks and consider disabling unnecessary Java functionality where possible. The vulnerability's characteristics align with CWE-502, which describes "Deserialization of Untrusted Data" as a common weakness pattern that enables arbitrary code execution through maliciously crafted serialized objects. Organizations should also consider implementing application whitelisting controls and monitoring for unusual deserialization activities that might indicate exploitation attempts. Given the nature of the vulnerability and its potential for remote code execution, security teams should conduct thorough vulnerability assessments of all Java-based applications and ensure that legacy systems are properly isolated or migrated to supported versions. The ATT&CK framework would categorize this vulnerability under T1059.007 for Java-based execution and T1210 for exploitation of remote services, highlighting the multi-faceted nature of the threat landscape that organizations must address through comprehensive security controls.