[Auditbeat] Cherry-pick #10865 to 6.7: Handle different bad login types #10908
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Depending on the distro and the type of login attempt (e.g. ssh, local login) the `ut_type` value in `/var/log/btmp` is different. So far, the login dataset only responded to the rarer login type `7` (`USER_PROCESS`). The more common one (seems to be exclusively used on Fedora 29, but also used on Ubuntu 18.04 for failed SSH login attempts) is `6` (`LOGIN_PROCESS`) that we are currently ignoring. This changes the code to have a separate function to process UTMP records from btmp files that treats both `USER_PROCESS` and `LOGIN_PROCESS` the same. It also adds a unit test for failed logins including a btmp test file from Ubuntu 18.04 with three bad login attempts. (cherry picked from commit 94666a8)
cwurm
changed the title
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Pinging @elastic/secops |
andrewkroh
approved these changes
Feb 23, 2019
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Cherry-pick of PR #10865 to 6.7 branch. Original message:
Depending on the distro and the type of login attempt (e.g. ssh, local login) the
ut_typevalue in/var/log/btmpis different. So far, the login dataset only responded to the rarer login type7(USER_PROCESS). The more common one (seems to be exclusively used on Fedora 29, but also used on Ubuntu 18.04 for failed SSH login attempts) is6(LOGIN_PROCESS) that we are currently ignoring.This changes the code to have a separate function to process UTMP records from btmp files that treats both
USER_PROCESSandLOGIN_PROCESSthe same.It also adds a unit test for failed logins including a btmp test file from Ubuntu 18.04 with three bad login attempts.