CVE-2022-22528 in Adaptive Server Enterprise
Summary
by MITRE • 02/10/2022
SAP Adaptive Server Enterprise (ASE) - version 16.0, installation makes an entry in the system PATH environment variable in Windows platform which, under certain conditions, allows a Standard User to execute malicious Windows binaries which may lead to privilege escalation on the local system. The issue is with the ASE installer and does not impact other ASE binaries.
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Analysis
by VulDB Data Team • 02/25/2026
SAP Adaptive Server Enterprise ASE version 16.0 contains a privilege escalation vulnerability that stems from improper handling of the Windows PATH environment variable during installation. This vulnerability specifically affects Windows platforms and creates a security risk through the installer's modification of system-level environment variables. The flaw occurs when the ASE installer adds its installation directory to the system PATH variable without proper access controls or validation mechanisms. This behavior creates an opportunity for malicious actors to exploit the system configuration and execute unauthorized code with elevated privileges.
The technical nature of this vulnerability aligns with CWE-426 Untrusted Search Path, where the system searches for executables in directories that have been manipulated by an unprivileged user. When a standard user installs ASE, the installer modifies the PATH environment variable to include the ASE installation directory, which is typically located in a user-accessible location such as the Program Files directory. The vulnerability becomes exploitable when malicious binaries are placed in the ASE installation directory, and the system subsequently executes these binaries through the modified PATH variable. This creates a scenario where a standard user can effectively escalate privileges to system level through the execution of crafted binaries.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential system compromise and unauthorized access to sensitive data. Attackers can leverage this vulnerability to execute malicious code with elevated privileges, potentially leading to complete system takeover. The vulnerability is particularly concerning because it operates at the installation phase, meaning that any user with standard privileges who can install ASE software can inadvertently create a backdoor for privilege escalation. This affects the principle of least privilege and undermines the security posture of Windows systems running ASE. The attack surface is limited to systems where ASE is installed and where the PATH modification has occurred, but the potential for exploitation remains significant.
Mitigation strategies should focus on immediate remediation through proper PATH variable management and access controls. Organizations should ensure that ASE installations are performed by privileged users with appropriate security controls in place, and that the installation directory is not writable by standard users. The recommended approach includes implementing strict access controls on ASE installation directories, monitoring PATH environment variable changes, and ensuring that only trusted executables are present in installation directories. Additionally, system administrators should regularly audit PATH variables and remove any unauthorized modifications. This vulnerability demonstrates the importance of secure installation practices and highlights the need for proper privilege management in system configuration processes. The issue also relates to ATT&CK technique T1068, which involves privilege escalation through the exploitation of system configuration vulnerabilities. Organizations should implement security awareness training to prevent unauthorized installation activities and maintain regular patch management processes to address such vulnerabilities. The vulnerability underscores the critical nature of environment variable security and the potential for seemingly benign installation processes to create significant security risks.
The vulnerability specifically impacts Windows systems where ASE version 16.0 is installed, and affects the installer process rather than runtime ASE binaries. This distinction is important because it limits the attack surface to installation scenarios and prevents persistent exploitation through ASE binaries themselves. However, the installer-based nature of the vulnerability means that any user with installation privileges can potentially create the exploitable condition, making it particularly dangerous in environments where standard users have access to installation tools or administrative processes. The security implications extend to all Windows platforms that support ASE installation, though the exact exploitation methods may vary based on the specific system configuration and user permissions present.