fail2ban vs. log4shell

As it was raining today, I hacked together „apache-log4shell”, a quick & dirty fail2ban filter that blocks hosts that try to exploit or „test for” CVE-2021-44228, also known as log4shell.

As fail2ban acts on log entries (oh, the irony), this is of course NOT a safeguard against log4shell, but a mere tool to reduce the lognoise.

Testcases, … can be found in my fail2ban GitLab repo.

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[Sonntag, 20211212, 14:00 | permanent link | 0 Kommentar(e)

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„Leyrers Online Pamphlet“ ist die persönliche Website von mir, Martin Leyrer. Die hier veröffentlichten Beiträge spiegeln meine Ideen, Interessen, meinen Humor und fallweise auch mein Leben wider.
The postings on this site are my own and do not represent the positions, strategies or opinions of any former, current or future employer of mine.

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