CVE-1999-0470 in NetWare
Summary
by MITRE
A weak encryption algorithm is used for passwords in Novell Remote.NLM, allowing them to be easily decrypted.
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Analysis
by VulDB Data Team • 12/20/2024
The vulnerability described in CVE-1999-0470 represents a critical cryptographic weakness in Novell Remote.NLM software that fundamentally undermines the security of password authentication mechanisms. This issue stems from the implementation of a weak encryption algorithm that fails to provide adequate protection for sensitive authentication data, creating a significant attack surface for malicious actors seeking unauthorized system access. The flaw specifically affects the password encryption process within the Novell Remote.NLM module, which is designed to facilitate remote administration and network connectivity in Novell NetWare environments. The use of insufficient cryptographic strength directly violates fundamental security principles and creates a dangerous exposure that can be exploited by threat actors without requiring advanced technical capabilities or significant resources.
The technical implementation of this vulnerability demonstrates a clear failure in cryptographic design and security engineering practices. The weak encryption algorithm employed in Novell Remote.NLM likely utilizes outdated or broken cryptographic primitives that can be readily reversed or cracked through standard cryptanalysis techniques. This weakness creates a direct path for attackers to recover plaintext passwords from encrypted password data, effectively nullifying the security benefits of password-based authentication. The vulnerability operates at the application layer and specifically targets the password handling functionality within the remote administration module, making it particularly dangerous for systems that rely on remote management capabilities. According to CWE standards, this represents a cryptographic weakness classified under CWE-327, which addresses the use of weak cryptographic algorithms that fail to provide adequate security protection for sensitive data.
The operational impact of this vulnerability extends far beyond simple credential theft, as it enables attackers to gain unauthorized access to network resources and potentially escalate privileges within the Novell NetWare environment. Once an attacker successfully decrypts passwords, they can establish persistent access to the system, perform unauthorized administrative actions, and potentially move laterally across the network to compromise additional systems. This vulnerability particularly affects organizations that depend on legacy Novell NetWare infrastructure and remote administration capabilities, where the lack of proper cryptographic protection creates a persistent security risk that can be exploited repeatedly. The attack surface is further expanded due to the nature of remote administration protocols, which often require minimal authentication barriers and can be accessed from external networks, making the system vulnerable to both internal and external threat actors.
Organizations affected by this vulnerability should immediately implement comprehensive mitigation strategies that address both immediate security concerns and long-term infrastructure improvements. The most critical remediation involves replacing or updating the vulnerable Novell Remote.NLM component with a version that implements strong cryptographic algorithms and proper password handling mechanisms. System administrators should also conduct thorough inventory assessments to identify all systems running vulnerable software and ensure proper network segmentation to limit the potential impact of credential compromise. Security controls should include regular monitoring for unauthorized access attempts and implementation of additional authentication mechanisms such as multi-factor authentication to provide defense-in-depth protection. From an ATT&CK framework perspective, this vulnerability maps to techniques involving credential access and privilege escalation, with the weak encryption providing an entry point that can be leveraged for lateral movement and persistent access within the network environment. The vulnerability also highlights the importance of cryptographic algorithm validation and proper security testing throughout the software development lifecycle to prevent similar issues in future implementations.