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72 lines
3.2 KiB
Plaintext
72 lines
3.2 KiB
Plaintext
2 years ago
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# Fail2Ban apache-auth filter
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#
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[INCLUDES]
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# Read common prefixes. If any customizations available -- read them from
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# apache-common.local
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before = apache-common.conf
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[Definition]
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# Mode for filter: normal (default) and aggressive (allows DDoS & brute force detection of mod_evasive)
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mode = normal
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# ignore messages of mod_evasive module:
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apache-pref-ign-normal = (?!evasive)
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# allow "denied by server configuration" from all modules:
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apache-pref-ign-aggressive =
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# mode related ignore prefix for common _apache_error_client substitution:
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apache-pref-ignore = <apache-pref-ign-<mode>>
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prefregex = ^%(_apache_error_client)s (?:AH\d+: )?<F-CONTENT>.+</F-CONTENT>$
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# auth_type = ((?:Digest|Basic): )?
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auth_type = ([A-Z]\w+: )?
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failregex = ^client (?:denied by server configuration|used wrong authentication scheme)\b
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^user (?!`)<F-USER>(?:\S*|.*?)</F-USER> (?:auth(?:oriz|entic)ation failure|not found|denied by provider)\b
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^Authorization of user <F-USER>(?:\S*|.*?)</F-USER> to access .*? failed\b
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^%(auth_type)suser <F-USER>(?:\S*|.*?)</F-USER>: password mismatch\b
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^%(auth_type)suser `<F-USER>(?:[^']*|.*?)</F-USER>' in realm `.+' (auth(?:oriz|entic)ation failure|not found|denied by provider)\b
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^%(auth_type)sinvalid nonce .* received - length is not\b
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^%(auth_type)srealm mismatch - got `(?:[^']*|.*?)' but expected\b
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^%(auth_type)sunknown algorithm `(?:[^']*|.*?)' received\b
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^invalid qop `(?:[^']*|.*?)' received\b
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^%(auth_type)sinvalid nonce .*? received - user attempted time travel\b
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^(?:No h|H)ostname \S+ provided via SNI(?:, but no hostname provided| and hostname \S+ provided| for a name based virtual host)\b
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ignoreregex =
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# DEV Notes:
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#
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# This filter matches the authorization failures of Apache. It takes the log messages
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# from the modules in aaa that return HTTP_UNAUTHORIZED, HTTP_METHOD_NOT_ALLOWED or
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# HTTP_FORBIDDEN and not AUTH_GENERAL_ERROR or HTTP_INTERNAL_SERVER_ERROR.
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#
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# An unauthorized response 401 is the first step for a browser to instigate authentication
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# however apache doesn't log this as an error. Only subsequent errors are logged in the
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# error log.
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#
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# Source:
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#
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# By searching the code in http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/aaa/*
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# for ap_log_rerror(APLOG_MARK, APLOG_ERR and examining resulting return code should get
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# all of these expressions. Lots of submodules like mod_authz_* return back to mod_authz_core
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# to return the actual failure.
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#
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# Note that URI can contain spaces.
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#
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# See also: http://wiki.apache.org/httpd/ListOfErrors
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# Expressions that don't have tests and aren't common.
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# more be added with https://issues.apache.org/bugzilla/show_bug.cgi?id=55284
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# ^user .*: nonce expired \([\d.]+ seconds old - max lifetime [\d.]+\) - sending new nonce\s*$
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# ^user .*: one-time-nonce mismatch - sending new nonce\s*$
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# ^realm mismatch - got `(?:[^']*|.*?)' but no realm specified\s*$
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#
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# Because url/referer are foreign input, short form of regex used if long enough to idetify failure.
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#
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# Author: Cyril Jaquier
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# Major edits by Daniel Black and Ben Rubson.
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# Rewritten for v.0.10 by Sergey Brester (sebres).
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