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Privilege escalation in set-user-alarm via specially crafted LOGNAME #19

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helmutg opened this issue Jan 13, 2023 · 0 comments
Open

Privilege escalation in set-user-alarm via specially crafted LOGNAME #19

helmutg opened this issue Jan 13, 2023 · 0 comments

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@helmutg
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helmutg commented Jan 13, 2023

The getlogin function honours the LOGNAME environment variable. This allows for quite some control over a filename to be written to as root. It seems likely that this allows a privilege escalation to root.
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