CVE-2005-1830 in SoftICE DriverStudio
Summary
by MITRE
The DbgMsg.sys driver in Compuware SoftICE DriverStudio 3.1 and 3.2 allows remote attackers to cause a denial of service (application crash) via an invalid Debug Message pointer.
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Analysis
by VulDB Data Team • 06/08/2019
The vulnerability identified as CVE-2005-1830 resides within the DbgMsg.sys kernel driver component of Compuware SoftICE DriverStudio versions 3.1 and 3.2. This driver serves as a critical interface for debugging and system monitoring operations, functioning at the kernel level where it processes debug messages and system events. The flaw manifests when the driver fails to properly validate incoming Debug Message pointers, creating a condition where malicious actors can craft specially crafted invalid pointers to trigger system instability. This vulnerability operates at the intersection of kernel-mode driver security and input validation, representing a classic case of improper pointer handling that can lead to system-wide consequences.
The technical implementation of this vulnerability stems from inadequate bounds checking and pointer validation mechanisms within the DbgMsg.sys driver. When the driver receives debug messages containing malformed pointer references, it attempts to dereference these invalid pointers without sufficient validation, resulting in memory access violations that cause the application or system to crash. This behavior aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds writes. The vulnerability operates at the kernel level, making it particularly dangerous as it can potentially lead to system instability or complete system crashes rather than mere application failures. The remote nature of the attack means that an attacker does not require local system access to exploit this vulnerability, making it especially concerning for networked environments.
The operational impact of this vulnerability extends beyond simple denial of service, as it represents a potential pathway for more sophisticated attacks within the ATT&CK framework under the T1068 technique for Exploitation for Privilege Escalation. While the primary effect is application crash, the kernel-level nature of the vulnerability means that exploitation could potentially be leveraged to gain elevated privileges or access to sensitive system resources. The vulnerability affects systems running the affected versions of Compuware SoftICE DriverStudio, which were widely used for software debugging and system monitoring purposes, making it relevant to organizations that still maintain legacy debugging environments. The remote exploitability means that attackers could potentially target systems without requiring physical access or local user credentials, presenting a significant risk to enterprise environments where such debugging tools might be deployed.
Mitigation strategies for this vulnerability should focus on immediate remediation through vendor-provided patches or updates to Compuware SoftICE DriverStudio to versions that properly validate Debug Message pointers. Organizations should also implement network segmentation to limit access to systems running the vulnerable software and consider disabling or removing the debugging components if they are not actively required. From a defensive perspective, system administrators should monitor for unusual application crashes or system instability that could indicate exploitation attempts. The vulnerability demonstrates the importance of proper input validation in kernel-mode drivers and reinforces the need for comprehensive security testing of system-level components. Additionally, organizations should consider implementing runtime monitoring and anomaly detection systems to identify potential exploitation attempts before they result in system compromise, aligning with defensive strategies outlined in the ATT&CK framework under T1046 for Network Service Scanning and T1070 for Indicator Removal on Host.