CVE-2012-2514 in NetWeaver
Summary
by MITRE
The DiagiEventSource 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 • 11/26/2024
The vulnerability identified as CVE-2012-2514 resides within the SAP NetWeaver 7.0 EHP1 and EHP2 dispatcher component, specifically in the DiagiEventSource function of disp+work.exe executable. This flaw manifests as a remote denial of service condition that can be exploited by malicious actors to crash the daemon process, thereby disrupting critical business operations. The affected versions include 7010.29.15.58313 and 7200.70.18.23869, representing specific builds of the SAP NetWeaver platform that are widely deployed in enterprise environments for business application integration and process automation. The vulnerability stems from insufficient input validation within the diagnostic packet processing mechanism, allowing attackers to craft malicious SAP Diag packets that trigger unexpected behavior in the dispatcher service.
The technical implementation of this vulnerability involves the improper handling of diagnostic packets that are designed for monitoring and debugging purposes within SAP systems. When the DiagiEventSource function processes a specially crafted SAP Diag packet, it fails to validate the packet structure and content adequately, leading to memory corruption or unexpected execution paths that ultimately cause the dispatcher daemon to terminate abruptly. This represents a classic buffer overflow or input validation vulnerability that falls under the CWE-121 category of buffer overflow conditions. The attack vector requires only network access to the SAP NetWeaver system, making it particularly dangerous as it can be exploited remotely without requiring local system access or authentication credentials.
The operational impact of this vulnerability extends beyond simple service disruption, as the SAP NetWeaver dispatcher is a critical component responsible for managing application server processes and handling concurrent user requests. When the daemon crashes, it results in immediate service unavailability for all applications relying on that dispatcher instance, potentially affecting hundreds or thousands of users depending on the deployment scale. Organizations may experience significant business disruption, including loss of productivity, customer service degradation, and potential financial impact from extended downtime. The vulnerability also creates opportunities for further exploitation attempts, as system administrators may be distracted by the immediate denial of service while attackers attempt additional attacks against the compromised system. This type of vulnerability aligns with ATT&CK technique T1499.004 for network denial of service attacks, where adversaries leverage system weaknesses to disrupt availability of services.
Mitigation strategies for CVE-2012-2514 should include immediate implementation of SAP security patches and updates released by SAP to address the specific input validation flaws in the dispatcher component. Organizations should also consider network segmentation and access controls to limit exposure of SAP NetWeaver systems to untrusted networks, implementing firewall rules that restrict access to diagnostic ports and services. Additionally, monitoring and logging should be enhanced to detect unusual patterns in diagnostic packet traffic that may indicate exploitation attempts. The implementation of intrusion detection systems and regular vulnerability assessments can help identify similar weaknesses in other components of the SAP ecosystem. Organizations should also maintain comprehensive incident response procedures that include specific protocols for handling dispatcher daemon crashes and system recovery procedures to minimize downtime and ensure business continuity during remediation activities.