CVE-2003-0722 in Solaris
Summary
by MITRE
The default installation of sadmind on Solaris uses weak authentication (AUTH_SYS), which allows local and remote attackers to spoof Solstice AdminSuite clients and gain root privileges via a certain sequence of RPC packets.
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Analysis
by VulDB Data Team • 08/10/2025
The vulnerability described in CVE-2003-0722 represents a critical security flaw in the Solaris operating system's default configuration of the sadmind service. This issue stems from the use of weak authentication mechanisms that fail to properly validate client identities, creating a pathway for malicious actors to escalate privileges. The sadmind service, which is part of the Solstice AdminSuite administration tools, is designed to provide remote administration capabilities but becomes dangerously insecure when deployed with default settings that rely on AUTH_SYS authentication.
The technical flaw manifests through the exploitation of the AUTH_SYS authentication mechanism, which is inherently weak and susceptible to spoofing attacks. This authentication method relies on the client's network address and user ID to establish identity, making it trivial for attackers to forge legitimate RPC packets that appear to originate from trusted sources. The vulnerability specifically allows for a sequence of RPC communications that can be manipulated to bypass proper authentication checks, ultimately enabling privilege escalation to the root level. This weakness exists because AUTH_SYS does not implement strong cryptographic verification or session management controls that would prevent unauthorized access.
From an operational perspective, this vulnerability creates a severe risk for Solaris systems that have not been properly configured or patched. Local attackers can exploit this weakness to gain root access without requiring additional credentials, while remote attackers can potentially leverage the vulnerability from outside the network perimeter. The impact extends beyond simple privilege escalation as it allows for complete system compromise, enabling attackers to modify system files, install malicious software, and establish persistent access. The default installation nature of this vulnerability means that many systems remain exposed without explicit security hardening measures.
Organizations should implement immediate mitigation strategies including disabling unnecessary services, configuring stronger authentication mechanisms, and applying security patches provided by Oracle. The vulnerability aligns with CWE-287, which addresses improper authentication issues in software systems, and maps to ATT&CK technique T1068, which covers privilege escalation through exploitation of system vulnerabilities. Security hardening practices should include implementing proper access controls, network segmentation, and monitoring for unusual RPC traffic patterns that might indicate exploitation attempts. Additionally, regular security audits should verify that default installations have been properly configured to prevent such authentication bypass scenarios from occurring in production environments.