CVE-2003-0999 in Solaris
Summary
by MITRE
Unknown multiple vulnerabilities in (1) lpstat and (2) the libprint library in Solaris 2.6 through 9 may allow attackers to execute arbitrary code or read or write arbitrary files.
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Analysis
by VulDB Data Team • 07/20/2025
The vulnerability identified as CVE-2003-0999 represents a critical security flaw affecting multiple components within the Solaris operating system versions 2.6 through 9. This vulnerability impacts both the lpstat utility and the underlying libprint library, creating potential attack vectors that could be exploited by malicious actors to gain unauthorized access to system resources. The affected components are fundamental to the printing subsystem functionality within Solaris, making this vulnerability particularly dangerous as it could be leveraged to compromise entire systems through the printing infrastructure.
The technical flaw stems from insufficient input validation and improper handling of user-supplied data within the lpstat command and libprint library functions. When these components process printing-related commands or data, they fail to properly sanitize input parameters, creating opportunities for buffer overflows, format string vulnerabilities, or other memory corruption issues. The vulnerability manifests when attackers provide maliciously crafted input to the lpstat utility or when the libprint library processes specially constructed print job data. This weakness allows attackers to manipulate the execution flow of these programs and potentially execute arbitrary code with the privileges of the affected processes, typically running with elevated permissions.
The operational impact of CVE-2003-0999 is severe and multifaceted, as it could enable attackers to achieve complete system compromise through the printing subsystem. An attacker could exploit this vulnerability to execute arbitrary code on the target system, potentially escalating privileges to root level access, or to read or write arbitrary files within the system. This capability would allow for data exfiltration, system modification, or the installation of persistent backdoors. The vulnerability affects systems where printing services are actively configured and running, making it particularly dangerous in enterprise environments where multiple users interact with shared printing resources. The broad range of affected Solaris versions from 2.6 through 9 indicates that this vulnerability has been present for an extended period, providing attackers with ample opportunity to develop and deploy exploitation techniques.
Mitigation strategies for CVE-2003-0999 should focus on immediate system hardening and patch management. Organizations should apply the relevant security patches provided by Sun Microsystems for their specific Solaris versions, as these updates contain fixes for the identified vulnerabilities in both lpstat and the libprint library. System administrators should also implement network segmentation to limit access to printing services and consider disabling unnecessary printing functionality where possible. The vulnerability aligns with CWE-121, which addresses stack-based buffer overflow conditions, and may also relate to CWE-122 for heap-based buffer overflows, both of which are categorized under the broader ATT&CK framework's privilege escalation and execution tactics. Additionally, implementing proper input validation and sanitization measures in custom applications that interface with printing services can help reduce the attack surface. Regular security assessments and monitoring of printing-related system activities should be conducted to detect potential exploitation attempts. Organizations should also consider implementing the principle of least privilege for printing services and ensuring that print job processing occurs with minimal required permissions to limit potential damage from successful exploitation attempts.