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Description of problem:
when the wordlist is provided back to cracklib for checking, some entries are accepted as secure

Version-Release number of selected component (if applicable):
cracklib-2.9.6-14.el8.x86_64

How reproducible:
always/common

Steps to Reproduce:
1. create-cracklib-dict /usr/share/dict/words; cracklib-check < /usr/share/dict/words | grep ': OK'

1. for j in `seq 1 14`; do tr -cd '[:alpha:]' < /dev/urandom | dd bs=1 count=10  2>/dev/null >> wordlist; echo >> wordlist; done
2. create-cracklib-dict wordlist
3. cracklib-check < wordlist | grep ': OK'

Actual results:
dichlorodiphenyltrichloroethane: OK
half-embracinghalf-embracingly: OK

Randomly:
AgplOHtGxJ: OK

Sometimes it also prints:
/usr/share/cracklib/pw_dict: error reading header

Expected results:
no passwords from wordlist accepted

Additional info:
regression compared to bug 986401

I cannot reproduce the issue with random words nor with /usr/share/cracklib/pw_dict: error reading header

The issue with the two long passwords might be related to dropped lookup patch. If you want this fixed in 8.0, please provide a qa_ack+.

OK, there are two issues. The cracklib-format script incorrectly filters out words longer than 29 characters where it should be filtering out words longer than 31 characters instead. I will correct that.

And there is a small regression in the password lookup algorithm, which I am going to correct as well.

Please note that even with these fixes words from the words dictionary longer than 31 characters can still be accepted by cracklib-check and that running create-cracklib-dict on wordlist containing only words longer than 31 characters will not create a valid pw_dict file and thus the cracklib-check will fail with error trying to open it.