CVE-2009-1012 in Bea Product Suite
Summary
by MITRE
Unspecified vulnerability in the plug-ins for Apache and IIS web servers in Oracle BEA WebLogic Server 7.0 Gold through SP7, 8.1 Gold through SP6, 9.0, 9.1, 9.2 Gold through MP3, 10.0 Gold through MP1, and 10.3 allows remote attackers to affect confidentiality, integrity, and availability. NOTE: the previous information was obtained from the April 2009 CPU. Oracle has not commented on claims from a reliable researcher that this is an integer overflow in an unspecified plug-in that parses HTTP requests, which leads to a heap-based buffer overflow.
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Analysis
by VulDB Data Team • 09/01/2019
The vulnerability identified as CVE-2009-1012 represents a critical security flaw affecting Oracle BEA WebLogic Server versions spanning multiple release lines including 7.0 through 10.3. This issue resides within the web server plug-ins for both Apache and IIS platforms, making it particularly dangerous as it affects widely deployed enterprise web infrastructure. The vulnerability was initially described as unspecified by Oracle, but subsequent research revealed it to be an integer overflow condition that ultimately results in heap-based buffer overflow, a classification that aligns with CWE-121 for buffer overflow vulnerabilities. The integer overflow occurs during HTTP request parsing within the unspecified plug-in component, creating a scenario where maliciously crafted requests can trigger memory corruption.
The technical exploitation of this vulnerability demonstrates how seemingly benign HTTP request processing can become a vector for severe system compromise. When the plug-in encounters malformed or specially crafted HTTP requests, the integer overflow condition causes the application to allocate insufficient memory for buffer operations, leading to heap corruption that can be leveraged by remote attackers. This type of vulnerability falls under the ATT&CK framework's technique T1203 for Exploitation for Client Execution, where attackers can manipulate application behavior through crafted input to achieve arbitrary code execution. The heap-based buffer overflow creates conditions where attackers can overwrite critical memory locations, potentially leading to complete system compromise or denial of service scenarios that affect confidentiality, integrity, and availability as specified in the original CVE description.
The operational impact of this vulnerability extends across enterprise environments where Oracle WebLogic Server serves as a critical component of application infrastructure. Organizations running affected versions face significant risk of unauthorized access, data breaches, and service disruption, particularly since the vulnerability affects both Apache and IIS plug-in implementations. The integer overflow condition makes this vulnerability particularly insidious as it can be triggered through normal web traffic without requiring special privileges or authentication. Security teams must consider the broader implications for network security posture, as successful exploitation could provide attackers with persistent access to backend systems, potentially enabling lateral movement within enterprise networks and access to sensitive data repositories. The vulnerability's presence in multiple service pack versions indicates it was a persistent issue requiring comprehensive patch management strategies across affected installations.
Mitigation strategies for CVE-2009-1012 should prioritize immediate patch deployment from Oracle, as the vulnerability affects multiple versions of the WebLogic Server platform. Organizations must implement network segmentation and access controls to limit exposure of affected servers to untrusted networks, while also deploying intrusion detection systems to monitor for exploitation attempts. The remediation process should include thorough testing of patches in non-production environments to ensure compatibility with existing applications and configurations. Security monitoring should focus on anomalous HTTP request patterns that might indicate exploitation attempts, particularly those involving malformed request structures. Additionally, organizations should consider implementing web application firewalls to filter suspicious HTTP traffic and establish incident response procedures specifically addressing heap overflow vulnerabilities. The vulnerability underscores the importance of maintaining current security patches and conducting regular vulnerability assessments to identify and remediate similar issues before they can be exploited in real-world scenarios.