CVE-2012-2511 in NetWeaver
Summary
by MITRE
The DiagTraceAtoms function in disp+work.exe 7010.29.15.58313 and 7200.70.18.23869 in the Dispatcher in SAP NetWeaver 7.0 EHP1 and EHP2 allows remote attackers to cause a denial of service (daemon crash) via a crafted SAP Diag packet.
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Analysis
by VulDB Data Team • 11/28/2024
The vulnerability identified as CVE-2012-2511 represents a critical denial of service flaw within the SAP NetWeaver 7.0 EHP1 and EHP2 dispatcher component. This issue specifically affects the DiagTraceAtoms function operating within disp+work.exe processes, which are fundamental to the SAP system's diagnostic and tracing capabilities. The affected versions 7010.29.15.58313 and 7200.70.18.23869 demonstrate a particular susceptibility to malformed packet structures that can trigger system instability. The vulnerability exists within the diagnostic infrastructure that SAP utilizes for system monitoring and troubleshooting, making it a potential target for attackers seeking to disrupt business operations through service interruption rather than data compromise.
The technical implementation of this vulnerability stems from insufficient input validation within the DiagTraceAtoms function, which processes SAP Diag packets that contain diagnostic information and tracing data. When remote attackers craft malicious SAP Diag packets with malformed or oversized data structures, the function fails to properly handle these inputs, leading to buffer overflows or memory corruption conditions. This processing error ultimately results in the dispatcher daemon crashing and restarting, thereby causing a denial of service condition that affects the entire SAP NetWeaver system. The flaw operates at the application level within the SAP dispatcher service, which serves as a critical communication hub for all SAP processes and user sessions, making the impact particularly severe.
The operational impact of this vulnerability extends beyond simple service disruption, as it can lead to significant business interruption and potential financial losses for organizations relying on SAP NetWeaver systems. When the dispatcher daemon crashes, all active user sessions are terminated, requiring manual intervention to restore system functionality. This disruption affects not only end users but also automated processes and business-critical applications that depend on SAP connectivity. The vulnerability's remote exploitability means that attackers can trigger the denial of service condition without requiring local system access or credentials, making it particularly dangerous in networked environments where SAP systems are exposed to external networks. Organizations may experience extended downtime while system administrators investigate and resolve the issue, potentially affecting production operations and customer service delivery.
Organizations should implement immediate mitigations including applying the relevant SAP security patches and hotfixes released to address this vulnerability, which typically involve enhanced input validation within the DiagTraceAtoms function. Network segmentation strategies should be employed to limit exposure of SAP systems to untrusted networks, while implementing firewall rules to restrict access to diagnostic ports and services. The vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and represents a classic example of improper input validation that can lead to system instability. From an ATT&CK framework perspective, this vulnerability maps to the T1499.004 technique related to network denial of service, and organizations should consider implementing intrusion detection systems to monitor for suspicious diagnostic packet patterns. Additionally, SAP recommends disabling unnecessary diagnostic services when not actively required for troubleshooting, reducing the attack surface and minimizing the risk of exploitation.