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Post new topic   Forum Index -> Third-party Modules View previous topic :: View next topic
Reply to topic   Topic: ModSecurity: Lua: Script execution failed
Author
maskego



Joined: 16 Apr 2010
Posts: 238

PostPosted: Sat 30 Jul '11 4:05    Post subject: ModSecurity: Lua: Script execution failed Reply with quote

I find the error log message from my logs.
Code:
ModSecurity: Lua: Script execution failed: attempt to call a nil value


Should I download the Lrexlib 2.5 to resolve this issue?
Or needs to recompile mod_security 2.6.1 ?
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7329
Location: Germany, Next to Hamburg

PostPosted: Mon 01 Aug '11 20:46    Post subject: Reply with quote

Is is a nil or a nul value? Are you using apache 2.3?
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maskego



Joined: 16 Apr 2010
Posts: 238

PostPosted: Tue 02 Aug '11 3:45    Post subject: Reply with quote

I use apache 2.2.19 download from apachelounge.
I can't find what is the rule to cause this error.

another google result is the linking below:

https://lists.owasp.org/pipermail/owasp-modsecurity-core-rule-set/2011-February/000630.html

It seems the security module's issue...


James Blond wrote:
Is is a nil or a nul value? Are you using apache 2.3?
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aprilgothic



Joined: 03 Aug 2011
Posts: 2

PostPosted: Wed 03 Aug '11 14:50    Post subject: Reply with quote

try this:

mkdir /opt/local
mkdir /opt/local/bin
cp -p /opt/lua/bin/* /opt/local/bin/
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7329
Location: Germany, Next to Hamburg

PostPosted: Wed 03 Aug '11 15:20    Post subject: Reply with quote

aprilgothic wrote:
try this:

mkdir /opt/local
mkdir /opt/local/bin
cp -p /opt/lua/bin/* /opt/local/bin/


He already solved this.. and by the way: this mainly a forum for apache on Windows Wink
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aprilgothic



Joined: 03 Aug 2011
Posts: 2

PostPosted: Wed 03 Aug '11 16:35    Post subject: Reply with quote

James Blond wrote:


He already solved this.. and by the way: this mainly a forum for apache on Windows Wink


Oops.. sorry. Embarassed
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maskego



Joined: 16 Apr 2010
Posts: 238

PostPosted: Thu 04 Aug '11 3:35    Post subject: Reply with quote

Can't find the solution...
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7329
Location: Germany, Next to Hamburg

PostPosted: Thu 04 Aug '11 9:41    Post subject: Reply with quote

Ok, since you think it is mod_sec you should do a bit trial and error. Disable all rules and enable one after another. Than you will find the rule that breaks the lua script. I know this will cost some time, but at least you'll find the rule(s).

Which rules did you enable? Only the core rules? I guess you send some paramters via GET parameter to your lua script?
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maskego



Joined: 16 Apr 2010
Posts: 238

PostPosted: Fri 05 Aug '11 6:00    Post subject: Reply with quote

It's a good idea and it's the only way to solve this issue.Thank you for your kindly reply. Very Happy
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7329
Location: Germany, Next to Hamburg

PostPosted: Mon 08 Aug '11 15:16    Post subject: Reply with quote

Did you find the rule(s) that causes the issues?
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maskego



Joined: 16 Apr 2010
Posts: 238

PostPosted: Tue 09 Aug '11 7:41    Post subject: Reply with quote

James:

crs_41_advanced_filters.conf

this rule causes error below:
ModSecurity: Lua: Script execution failed: attempt to call a nil value


James Blond wrote:
Did you find the rule(s) that causes the issues?
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