Description of problem: chkrootkit always reports: Possible Linux/Ebury - Operation Windigo installetd Version-Release number of selected component (if applicable): chkrootkit-0.50-4.fc22.x86_64 openssh-6.8p1-8.fc22.x86_64 How reproducible: Always. Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: The test uses $(ssh -G) (print configuration and exit) and looks for signatures in the output. ssh -G now requires a host argument. ssh -G prints usage and exit 255, triggering report. ssh -G localhost prints configuration and exit 0. I assume that openssh has changed recently.
After a little investigation.... The Linux/Ebury root-kit infects ssh and can be identified by the way it handles illegal or unknown command-line options, not printing an information line before usage: ... Accepted wisdom is to invoke ssh with an illegal option and check that the expected extra line is there (clean) or missing (infected). chkrootkit uses $(ssh -G) as it's illegal invocation but OpenSSH added the '-G' option to print configuration back in 2014. Long story short - chkrootkit needs to pick a different illegal option. Currently unused options include djruzBHJUZ. Changing the script (2 places) appears to work (I used -H, $(rpm -Vv openssh-clients) to check). ... Searching for Linux/Ebury - Operation Windigo ssh... nothing found ...
chkrootkit-0.50-7.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-a5f68c1854
chkrootkit-0.50-7.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-afc728e85d
chkrootkit-0.50-7.fc22 has been submitted as an update to Fedora 22. https://bodhi.fedoraproject.org/updates/FEDORA-2016-37fa8f9d3a
*** Bug 1279170 has been marked as a duplicate of this bug. ***
chkrootkit-0.50-8.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b93b991ea4
chkrootkit-0.50-8.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-6c1a60982e
chkrootkit-0.50-8.fc22 has been submitted as an update to Fedora 22. https://bodhi.fedoraproject.org/updates/FEDORA-2016-533e10ae24
chkrootkit-0.50-8.fc22 has been pushed to the Fedora 22 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-533e10ae24
chkrootkit-0.50-8.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b93b991ea4
chkrootkit-0.50-8.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-6c1a60982e
chkrootkit-0.50-8.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
chkrootkit-0.50-8.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
chkrootkit-0.50-8.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.