Can vi able to modify readonly file ?
Issue
A directory has these permissions:
dr-xrwxr-x 2 UA listener 4096 Dec 19 14:13 risk/
A file in it has:
-r--rw-r-- 1 UA listener 5 Dec 19 14:42 something
listener:x:65858:mutt,jeff
Now, as user UA:
-bash-3.2$ cat risk/something
junk
-bash-3.2$ rm risk/something
rm: remove write-protected regular file `risk/something'? y
rm: cannot remove `risk/something': Permission denied
as expected.
-bash-3.2$ vi risk/something
treasure
~
~
~
~
~
~
"risk/something" \[Modified\]\[readonly\] line 1 of 1 --100%-- col 8
w!
"risk/something" 1L, 9C written
-bash-3.2$ cat risk/something
treasure
vi is not a setuid program
-bash-3.2$ ls -l \`which vi\`
-rwxr-xr-x 1 root root 632912 Jun 12 2009 /bin/vi
The filesystem is a logical volume:
/dev/mapper/sysvg-rootlv
Environment
- RHEL(all versions)
- vim
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