CVE-2022-4223 in pgAdmin
Summary
by MITRE • 12/13/2022
The pgAdmin server includes an HTTP API that is intended to be used to validate the path a user selects to external PostgreSQL utilities such as pg_dump and pg_restore. The utility is executed by the server to determine what PostgreSQL version it is from. Versions of pgAdmin prior to 6.17 failed to properly secure this API, which could allow an unauthenticated user to call it with a path of their choosing, such as a UNC path to a server they control on a Windows machine. This would cause an appropriately named executable in the target path to be executed by the pgAdmin server.
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Analysis
by VulDB Data Team • 03/17/2025
The vulnerability described in CVE-2022-4223 affects the pgAdmin server software, specifically targeting its HTTP API designed for validating paths to external PostgreSQL utilities. This API functionality serves a legitimate purpose in determining PostgreSQL version compatibility by executing utilities such as pg_dump and pg_restore. The flaw exists within the server's authentication and authorization mechanisms, where the API endpoint lacks proper access controls that should prevent unauthorized execution of arbitrary commands. This represents a critical security oversight in the software's architecture, as it exposes a functionality that should only be accessible to authenticated administrators to potentially unauthenticated attackers. The vulnerability directly violates security principles of least privilege and proper input validation, creating an attack surface that could be exploited by malicious actors without requiring any credentials or authentication.
The technical implementation of this vulnerability stems from inadequate API endpoint protection within the pgAdmin server software. The API endpoint that validates external utility paths fails to perform proper authentication checks before executing commands, allowing any remote attacker to invoke the validation function with arbitrary path parameters. When an attacker supplies a malicious path such as a UNC path pointing to a remote server they control, the pgAdmin server executes the utility at that location with the privileges of the server process. This creates a remote code execution scenario where attackers can potentially execute arbitrary executables on the target system, particularly in Windows environments where UNC paths are commonly used. The flaw essentially transforms a legitimate administrative function into a command execution vector, bypassing normal security boundaries that should protect against unauthorized code execution. This behavior aligns with CWE-863, which addresses improper authorization issues in software systems, and represents a classic example of how insufficient access controls can lead to privilege escalation and remote code execution vulnerabilities.
The operational impact of this vulnerability is severe and far-reaching, particularly for organizations that deploy pgAdmin in production environments or expose it to untrusted networks. Attackers exploiting this vulnerability can gain arbitrary code execution on the pgAdmin server, potentially leading to complete system compromise, data exfiltration, or further lateral movement within the network. The vulnerability affects all versions prior to 6.17, meaning that organizations running older versions of pgAdmin are at significant risk. In Windows environments, the attack vector becomes particularly dangerous as UNC paths can be used to execute code from remote servers, potentially allowing attackers to leverage this vulnerability for initial access or privilege escalation. The impact extends beyond immediate code execution to include potential data loss, system integrity compromise, and regulatory compliance violations. Organizations using pgAdmin for database administration may find their database infrastructure exposed to unauthorized access, as the vulnerability can be exploited without any authentication requirements, making it particularly attractive to attackers seeking persistent access to database environments.
Organizations should immediately upgrade to pgAdmin version 6.17 or later, which includes proper authentication checks and input validation for the affected API endpoint. The fix addresses the root cause by implementing mandatory authentication for the path validation functionality, ensuring that only authorized users can invoke the API. Additionally, network segmentation should be implemented to limit access to pgAdmin servers, particularly in environments where the software is exposed to untrusted networks. Organizations should also consider implementing network monitoring to detect suspicious API calls and unusual execution patterns that might indicate exploitation attempts. The vulnerability highlights the importance of proper input validation and access control mechanisms in web applications, aligning with ATT&CK technique T1203 for legitimate credential use and T1059 for command and script execution. Security teams should conduct thorough vulnerability assessments of their pgAdmin installations and review network access controls to ensure that administrative functions are properly protected from unauthorized access, particularly in multi-tenant or shared hosting environments where the risk of exploitation is heightened due to the potential for cross-tenant attacks.