[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[cobalt-security] Possible problem?



Although it is not 100% accurate (tell this to the customer), one can be
resonably sure that the
server has been hacked if any of the following produces output:

      rpm -V procps
      rpm -V fileutils
      rpm -V net-tools
      rpm -V util-linux
      ...any questions, run these on our servers.

      NOTE: util-linux will complain about:
      S.5....T c /etc/pam.d/chfn
      S.5....T c /etc/pam.d/chsh
      S.5....T c /etc/pam.d/login
      .M...... /usr/bin/newgrp
      .M...... /usr/bin/write
These are OK...they should not be different, but they DO NOT show that
you've been hacked.

OK, I tried this, and the last one, rpm -V util-linux gives the following:

S.5....T c /etc/pam.d/chfn
S.5....T c /etc/pam.d/chsh
S.5....T c /etc/pam.d/login
..?.....   /usr/bin/chfn
..?.....   /usr/bin/chsh
.M?.....   /usr/bin/newgrp
.M......   /usr/bin/write

Are the /usr/bin/chfn and /usr/bin/chsh lines a problem? I've found a few references to bugs in these programs from a few years ago.

-Scott

--------------------------------
Scott Genevish
Training Systems Project Manager
Kinko's, Inc
(805) 477-5307
--------------------------------