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CarloMun's avatar
CarloMun
Icon for Nimbostratus rankNimbostratus
Dec 19, 2021

Log4j iRule mitigation as described in K59329043 - which encoding is the regex using ?

Hi Community,   just for my understanding - can someone please clarify which encoding is being used in the regex with F5 release under K59329043 in order to mitigate log4j CVEs exploits ?   I...
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iRules
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Daniel_Wolf's avatar
Daniel_Wolf
Icon for MVP rankMVP

Hi ,

 

the regex will search for some possible variants and obfuscations of the well-known string that is used to exploit the log4shell vulnerability.

Paste the full string without the {} here: https://regex101.com/.

You will get an awesome explanation with syntax highlighting.

 

KR

Daniel

L__G_'s avatar
L__G_
Icon for Altostratus rankAltostratus
Jan 11, 2022

Hello

 

Another great site for regex visualisation : regexper.com

 

Copy paste the F5 regex without the {} and (?i).