CVE-1999-0556

Summary

CVE-1999-0556 is a vulnerability identified in Unix systems where two or more user accounts have the same User ID (UID). This issue arises when the operating system fails to uniquely identify each account by UID, leading to potential security consequences. An attacker could exploit this vulnerability to gain unauthorized access to another user's account or escalate privileges by moving between accounts with the same UID. Misconfiguration or weak system administration practices can result in this vulnerability. It is crucial for system administrators to ensure each account has a unique UID to maintain the security and integrity of the Unix system.

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