Environment Variable Vulnerability in FreeBSD and Other BSD Distributions

CVE-2006-6165

What is CVE-2006-6165?

The ld.so dynamic linker in FreeBSD, NetBSD, and potentially other BSD operating systems fails to appropriately clear out harmful environment variables. This oversight can allow malicious local users to elevate their privileges by injecting specific environment variables into processes during execution. Although a third party has contended that it is the application's responsibility to adequately handle these environment variables, the vulnerability presents significant security risks and highlights the necessity for better environment sanitization practices in operating system components.

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