* [PATCH 0/2] restrict statistics information to user
@ 2011-06-24 12:07 Vasiliy Kulikov
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From: Vasiliy Kulikov @ 2011-06-24 12:07 UTC (permalink / raw)
To: linux-kernel
Cc: Balbir Singh, Andrew Morton, Al Viro, David Rientjes,
Stephen Wilson, KOSAKI Motohiro, security, Eric Paris,
Solar Designer
taskstats and /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 (pass_len = w_chars - CONST).
Restrict it to user.
The simplified proof learning whether ~*/.ssh/authorized_keys file
exists is posted here:
http://www.openwall.com/lists/oss-security/2011/06/21/12
Vasiliy Kulikov (2):
proc: restrict access to /proc/PID/io
taskstats: restrict access to user
fs/proc/base.c | 7 +++++--
kernel/taskstats.c | 23 ++++++++++++++++++++++-
2 files changed, 27 insertions(+), 3 deletions(-)
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2011-06-24 12:07 [PATCH 0/2] restrict statistics information to user Vasiliy Kulikov
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