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| author |   Vasiliy Kulikov <segoon@openwall.com> | 2011-06-24 16:08:38 +0400 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-28 09:39:11 -0700 |
| commit | 1d1221f375c94ef961ba8574ac4f85c8870ddd51 (patch) | |
| tree | 1e05f1c33bef03a88745c55ac9891b8423ae1795 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | Linux 3.0-rc5 (diff) | |
| download | wireguard-linux-1d1221f375c94ef961ba8574ac4f85c8870ddd51.tar.xz wireguard-linux-1d1221f375c94ef961ba8574ac4f85c8870ddd51.zip | |
proc: restrict access to /proc/PID/io
/proc/PID/io may be used for gathering private information. E.g. for
openssh and vsftpd daemons wchars/rchars may be used to learn the
precise password length. Restrict it to processes being able to ptrace
the target process.
ptrace_may_access() is needed to prevent keeping open file descriptor of
"io" file, executing setuid binary and gathering io information of the
setuid'ed process.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions