CVE-2002-1030 in WebLogic Server
Summary
by MITRE
Race condition in Performance Pack in BEA WebLogic Server and Express 5.1.x, 6.0.x, 6.1.x and 7.0 allows remote attackers to cause a denial of service (crash) via a flood of data and connections.
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Analysis
by VulDB Data Team • 09/10/2025
The vulnerability identified as CVE-2002-1030 represents a critical race condition flaw within the Performance Pack component of BEA WebLogic Server and Express versions 5.1.x through 7.0. This issue manifests as a denial of service condition that can be exploited remotely by attackers who flood the system with excessive data and connection requests. The race condition occurs during the processing of concurrent requests and connection handling within the server's performance monitoring and management subsystem, creating a window where improper resource management can lead to system instability and complete service interruption.
The technical root cause of this vulnerability lies in the improper synchronization mechanisms within the Performance Pack's connection handling and resource allocation routines. When multiple concurrent connections and data streams are processed simultaneously, the system fails to properly coordinate access to shared resources and memory structures. This race condition typically occurs during the initialization, processing, or termination phases of connection handling, where the server's internal state becomes inconsistent due to overlapping operations. The flaw is classified under CWE-362, which specifically addresses race conditions in software systems, making it a classic example of improper synchronization that can be exploited by malicious actors.
From an operational impact perspective, this vulnerability presents a significant threat to enterprise web applications that rely on BEA WebLogic Server for their backend services. The remote exploitation capability means that attackers can potentially disrupt critical business operations from anywhere on the network without requiring local system access or authentication. The denial of service effect manifests as complete server crashes, application unavailability, and potential data loss during the crash recovery process. Organizations using affected versions of WebLogic Server face substantial risk of service interruption, particularly in high-traffic environments where connection flooding attacks can be easily executed using automated tools.
The attack vector for CVE-2002-1030 leverages the server's response to high-volume connection and data traffic, making it particularly dangerous in environments where the server handles significant user loads. Attackers can exploit this vulnerability by establishing numerous simultaneous connections and transmitting large volumes of data to overwhelm the system's connection handling mechanisms. The attack requires no special privileges or authentication credentials, making it accessible to any remote user with network access to the vulnerable server. This characteristic aligns with ATT&CK technique T1499.004, which covers network denial of service attacks targeting application availability.
Mitigation strategies for this vulnerability should focus on immediate patching and configuration hardening measures. Organizations must upgrade to patched versions of BEA WebLogic Server that address the race condition in the Performance Pack component. Additionally, implementing connection rate limiting, traffic monitoring, and intrusion detection systems can help detect and prevent exploitation attempts. Network-level protections such as firewall rules that limit connection rates and implementing proper resource allocation limits within the server configuration can provide additional defense-in-depth measures. The vulnerability also highlights the importance of proper software testing for race conditions in concurrent programming environments, particularly in enterprise application servers where multiple simultaneous operations are common.