Improper Argument Order in sm_close_on_exec Function Allows Unauthorized Access to File Descriptors

CVE-2014-3956 · LOW Severity

AV:L/AC:M/AU:N/C:P/I:N/A:N

The sm_close_on_exec function in conf.c in sendmail before 8.14.9 has arguments in the wrong order, and consequently skips setting expected FD_CLOEXEC flags, which allows local users to access unintended high-numbered file descriptors via a custom mail-delivery program.

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