CVE-2005-1040 in linux desktop
Summary
by MITRE
multiple unknown vulnerabilities in netapplet in novell linux desktop 9 allow local users to gain root privileges related to "user input [being] passed to network scripts without verification."
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Analysis
by VulDB Data Team • 07/23/2017
The vulnerability identified as CVE-2005-1040 represents a critical privilege escalation issue within the Novell Linux Desktop 9 operating system, specifically affecting the netapplet component. This flaw resides in the manner in which user input is processed and handled within network script execution contexts, creating a pathway for local attackers to escalate their privileges to the root level. The vulnerability stems from inadequate input validation mechanisms that fail to properly sanitize or verify user-provided data before it is passed to network scripts, allowing malicious input to be executed with elevated privileges. The netapplet component serves as a network management utility that interfaces with system network configurations, making it a prime target for privilege escalation attacks. This vulnerability specifically impacts the security model of the operating system by undermining the principle of least privilege, where user input should never be trusted without proper verification and sanitization before system-level operations are performed.
The technical implementation of this vulnerability demonstrates a classic case of insufficient input validation and privilege separation issues, which aligns with CWE-20 - Improper Input Validation and CWE-78 - Improper Neutralization of Special Elements used in an OS Command. The flaw occurs when user-provided data is directly incorporated into network script execution without proper sanitization or verification processes. Attackers can exploit this by crafting malicious input that, when processed by the netapplet, gets executed with root privileges due to the lack of proper access controls and input validation. The vulnerability exists because the system fails to implement proper command injection prevention mechanisms, allowing arbitrary commands to be executed within the context of the root user. This type of vulnerability falls under the ATT&CK framework category of privilege escalation through exploitation of software vulnerabilities, specifically mapping to T1068 - Exploitation for Privilege Escalation and T1548.1 - Abuse of Functionality.
The operational impact of CVE-2005-1040 is severe and far-reaching, as it provides local users with complete system control through privilege escalation. Once exploited, attackers can gain root access to the entire system, enabling them to modify critical system files, install malicious software, create new user accounts, and access all data on the system. The vulnerability affects the integrity and confidentiality of the entire operating environment since a local user can essentially bypass all security controls and gain unrestricted access to system resources. This compromise undermines the fundamental security assumptions of the Novell Linux Desktop 9 platform, as it allows any local user to escalate their privileges without requiring additional authentication or authorization. The vulnerability also impacts system availability by potentially allowing attackers to modify network configurations, disable security services, or cause system instability through malicious script execution. Organizations using this platform face significant risk of data breaches, system compromise, and potential lateral movement within their network infrastructure.
Mitigation strategies for CVE-2005-1040 should focus on immediate patching and system hardening measures to address the root cause of the vulnerability. The primary solution involves applying the vendor-supplied security patches that correct the input validation issues within the netapplet component. System administrators should also implement proper input sanitization and validation mechanisms to prevent untrusted data from being passed to network scripts without proper verification. The security model should be enhanced through the implementation of mandatory access controls and privilege separation mechanisms that prevent local users from executing privileged operations. Additionally, monitoring and logging should be configured to detect suspicious activities related to network script execution and privilege escalation attempts. Organizations should also consider implementing the principle of least privilege by restricting the capabilities of the netapplet component and ensuring it only performs necessary network operations with minimal required privileges. Regular security audits and vulnerability assessments should be conducted to identify similar input validation issues in other system components, and system hardening practices should be applied to reduce the attack surface of network management utilities. The remediation process should include disabling unnecessary network management features and implementing proper user access controls to limit exposure to this type of vulnerability.