CVS commit: [netbsd-8] src/lib/libutil

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Sun Jun 24 09:34:33 UTC 2018

Modified Files:
        src/lib/libutil [netbsd-8]: passwd.c

Log Message:
Pull up following revision(s) (requested by kamil in ticket #899):

        lib/libutil/passwd.c: revision 1.53

Prevent underflow buffer read in trim_whitespace() in libutil/passwd.c

If a string is empty or contains only white characters, the algorithm of
removal of white characters at the end of the passed string will read
buffer at index -1 and keep iterating backward.

Detected with MKSANITIZER/ASan when executing passwd(1).


To generate a diff of this commit:
cvs rdiff -u -r1.52 -r1.52.24.1 src/lib/libutil/passwd.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.