As noted in the docs it's possible to disable this behavior with:

Log::Log4perl::Config->allow_code(0);

[download]

So it's insecure by default. Not nice.

And the same is true for the next documented feature, Log::Log4perl::Config->allowed_code_ops(...). Quoting the documentation:

By default, a value of '1' is assumed, which does a normal 'eval' without any restrictions.

Insecure by default, you have to lock it down explicitly. Again, not nice.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^4: Log4Shell and Log::Log4perl by afoken
in thread Log4Shell and Log::Log4perl by bliako

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