CVE-2009-1016 in BEA Product Suite
Summary
by MITRE
Unspecified vulnerability in the WebLogic Server component in BEA Product Suite 10.3, 10.0 MP1, 9.2 MP3, 9.1, 9.0, 8.1 SP6, and 7.0 SP7 allows remote authenticated users to affect confidentiality, integrity, and availability, related to IIS. NOTE: the previous information was obtained from the April 2009 CPU. Oracle has not commented on claims from a reliable researcher that this is a stack-based buffer overflow involving an unspecified Server Plug-in and a crafted SSL certificate.
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Analysis
by VulDB Data Team • 09/01/2019
The vulnerability identified as CVE-2009-1016 represents a critical security flaw within Oracle WebLogic Server component of the BEA Product Suite affecting multiple versions including 10.3, 10.0 MP1, 9.2 MP3, 9.1, 9.0, 8.1 SP6, and 7.0 SP7. This issue specifically relates to the interaction between WebLogic Server and Internet Information Services IIS, creating a potential attack vector that could be exploited by remote authenticated users. The vulnerability's classification as unspecified initially obscured its true nature, but subsequent research has revealed it to be a stack-based buffer overflow condition that occurs within an unspecified Server Plug-in component. This type of vulnerability falls under the CWE-121 category of Stack-based Buffer Overflow, which represents a fundamental flaw in memory management where data written to a buffer exceeds the allocated stack space, potentially leading to arbitrary code execution or system instability.
The technical exploitation of this vulnerability occurs through manipulation of SSL certificates, specifically crafted certificates that trigger the buffer overflow condition within the WebLogic Server's IIS integration plug-in. When a maliciously constructed SSL certificate is processed by the vulnerable server component, it causes the stack memory to be overwritten, potentially allowing attackers to execute arbitrary code with the privileges of the WebLogic Server process. This attack vector is particularly dangerous because it leverages the legitimate SSL certificate processing functionality while exploiting a memory corruption flaw that can be triggered remotely by authenticated users. The vulnerability's impact extends across all three pillars of the CIA triad as it can compromise confidentiality through data exfiltration, integrity through code injection, and availability through potential system crashes or denial of service conditions.
From an operational perspective, this vulnerability presents significant risk to organizations utilizing Oracle WebLogic Server in their infrastructure, particularly those with IIS integration components. The remote authenticated nature of the attack means that an attacker with valid credentials to the system could potentially exploit this vulnerability without requiring physical access or additional privileges. The fact that this vulnerability affects multiple versions of the BEA Product Suite indicates a widespread exposure across organizations that have not yet applied the necessary patches. Attackers could leverage this flaw to gain unauthorized access to sensitive data, modify system configurations, or disrupt services, making it a high-priority target for exploitation in advanced persistent threat campaigns. The vulnerability's presence in versions as old as 7.0 SP7 suggests that organizations with legacy systems may be particularly at risk, especially those that have not implemented proper security updates or have delayed patch deployment due to compatibility concerns.
Organizations should implement immediate mitigation strategies including applying the official Oracle security patches released in the April 2009 Critical Patch Update, which specifically address this buffer overflow vulnerability. Network segmentation and access controls should be strengthened to limit the attack surface, particularly restricting access to WebLogic Server components from untrusted networks. Monitoring systems should be enhanced to detect unusual SSL certificate processing patterns or potential exploitation attempts through intrusion detection systems. Additionally, organizations should conduct comprehensive vulnerability assessments to identify all instances of affected WebLogic Server versions and ensure proper patch management procedures are in place. The vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1566 for credential harvesting, making it a critical concern for organizations implementing comprehensive cybersecurity frameworks. Regular security audits and vulnerability scanning should be performed to maintain visibility into potential exploitation vectors, while incident response procedures should be updated to include specific handling of buffer overflow vulnerabilities in web server components.