Install Log4J cop file again after CUCM update?

[A_]

Do I need to install the log4j cop file again after a SU update of CUCM? I installed log4j fix weeks before the update. It was 11.5 SU9 before and CUCM was updated to 11.5 SU10. I know the cop file removes the log4j jar files but I don't know if SU10 installs it again. I also don't see the log4j cop file via show version active command.

[b.winter · Accepted solution]

If SU10 is also affected by the log4j leak (don't have it in mind, but I think it is), then yes, you have to install the cop file again.

[Roger Kallberg · Accepted solution]

Yes you'll need to install the fix for the defect again if you have performed an update later to a version that is affected by the defect.

[Nithin Eluvathingal · Accepted solution]

CUCM: All versions from 11.5.1.17900- to 11.5.1.23162-1 (including SU7, SU8, SU9, SU10, and all ES’s) CUC: Same as CUCM
CER: 11.5.4.65000-14 and 11.5.4.66000-14
IM&P: 11.5.1.17900-8, 11.5.1.18900-15, 11.5.1.18900-16, 11.5.1.18901-3, 11.5.1.21900-5, and 11.5.1.22900-6

Reinstall  the cop