CVE-2002-1285 in Linux
Summary
by MITRE
runlpr in the LPRng package allows the local lp user to gain root privileges via certain command line arguments.
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Analysis
by VulDB Data Team • 06/30/2024
The vulnerability identified as CVE-2002-1285 resides within the LPRng package's runlpr utility, which represents a critical privilege escalation flaw affecting Unix-like operating systems. This vulnerability specifically targets the local lp user account and enables unauthorized privilege elevation to root level access through manipulation of command line arguments. The LPRng package serves as a print spooler system that manages print jobs and printer operations, making it a critical component in enterprise network environments where print services are extensively utilized.
The technical mechanism behind this vulnerability stems from improper input validation and privilege handling within the runlpr utility. When the lp user executes runlpr with specific command line arguments, the program fails to properly sanitize or validate these inputs before processing them as system commands. This creates an exploitable condition where maliciously crafted arguments can be interpreted as shell commands, allowing the local lp user to execute arbitrary code with elevated privileges. The flaw essentially represents a classic command injection vulnerability that bypasses normal privilege boundaries and allows unprivileged users to escalate their access level.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides attackers with complete control over the affected system. Once the local lp user gains root privileges through this vulnerability, they can modify system files, install malicious software, create new user accounts, and access all system resources without restriction. This represents a severe security compromise that can lead to data breaches, system compromise, and potential lateral movement within network environments where multiple systems utilize the same print spooler infrastructure. The vulnerability is particularly dangerous because it requires minimal privileges to exploit and provides maximum system access upon successful exploitation.
Mitigation strategies for CVE-2002-1285 should focus on immediate patching of the LPRng package to address the privilege escalation flaw. System administrators should also implement proper access controls and privilege separation, ensuring that the lp user account has minimal required permissions beyond basic print operations. Network segmentation and monitoring of print spooler activities can help detect potential exploitation attempts. From a cybersecurity framework perspective, this vulnerability aligns with CWE-78 and CWE-20 categories, representing command injection and input validation issues respectively. The attack pattern corresponds to techniques described in MITRE ATT&CK matrix under privilege escalation and command execution domains, emphasizing the need for robust input validation and privilege management practices in system design and implementation. Organizations should also consider implementing principle of least privilege models and regular security assessments to prevent similar vulnerabilities from being exploited in production environments.