CVE-1999-1338 in Delegate
Summary
by MITRE
Delegate proxy 5.9.3 and earlier creates files and directories in the DGROOT with world-writable permissions.
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Analysis
by VulDB Data Team • 04/19/2026
The vulnerability identified as CVE-1999-1338 affects Delegate proxy versions 5.9.3 and earlier, presenting a critical security flaw in file system permission management. This issue stems from the software's failure to properly enforce secure permission settings when creating files and directories within the DGROOT directory structure. The Delegate proxy is a widely used tool for managing network services and proxy operations, making this vulnerability particularly concerning for organizations relying on its functionality. The flaw allows unauthorized users to gain write access to critical system directories, potentially enabling privilege escalation and persistent access to compromised systems.
The technical implementation of this vulnerability involves the software's default file creation behavior where newly generated files and directories inherit world-writable permissions. This means that any user account on the system can modify or delete these files, regardless of their intended access restrictions. The flaw occurs at the permission setting level during file system operations, where the software fails to properly set restrictive permissions such as 600 or 644, instead defaulting to 777 or similar permissive settings. This behavior directly violates fundamental security principles of least privilege and proper access control enforcement.
The operational impact of CVE-1999-1338 extends beyond simple file system compromise, creating potential pathways for attackers to escalate privileges and maintain persistent access within affected environments. An attacker who can write to the DGROOT directory can potentially modify critical configuration files, inject malicious code into proxy operations, or create backdoor access points. This vulnerability aligns with CWE-732: Incorrect Permission Assignment for Critical Resource, which specifically addresses inadequate permission settings on security-critical system resources. The flaw also maps to ATT&CK technique T1068: Exploitation for Privilege Escalation, as the world-writable permissions can be exploited to gain elevated system privileges.
Organizations affected by this vulnerability should immediately implement mitigation strategies including updating to Delegate proxy versions 5.9.4 or later where the issue has been resolved, manually correcting permissions on existing files within DGROOT, and conducting thorough security audits of the affected systems. System administrators should also implement monitoring for unauthorized modifications to proxy configuration files and consider implementing additional access controls such as mandatory access controls or enhanced file system auditing. The vulnerability demonstrates the critical importance of proper permission management in network services and highlights how seemingly minor configuration issues can create significant security risks. Regular security assessments and vulnerability scanning should be implemented to identify similar permission-related flaws in other network services and system components.