mod_security2: Failed to write to DBM file "/var/cache/modsecurity/ip": Invalid argument

Created:

2016-11-16 12:46:07 UTC

Modified:

2016-12-21 19:10:04 UTC

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mod_security2: Failed to write to DBM file "/var/cache/modsecurity/ip": Invalid argument

Symptoms

We did install mod_security2 through Plesk. Free rules set of Comodo is activated.Quite often, we must find lines as follows in modsec_audit.log :

Message: collection_store: Failed to write to DBM file "/var/cache/modsecurity/ip": Invalid argument

Cause

Th issue is caused by bug in mod_security2 by Comodo.

Resolution

  • Install the latest version of comodo mod_security2
  • If it not helped then deactivate the BruteForce filters in Comodo Web Application Firewall and contact Comodo support.
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