GitHub user hanm opened a pull request:
https://github.com/apache/zookeeper/pull/183
ZOOKEEPER-2693: DOS attack on wchp/wchc four letter words (4lw).
Similar as pull request 179, this PR introduces new property
zookeeper.4lw.commands.whitelist to branch-3.4.
Unlike branch-3.5 where all 4lw (with few exceptions) is disabled by
default, for branch-3.4 only "wchp" and "wchc" are disabled by default - since
4lw is widely used and there is no alternatives in branch-3.4 so we just
disable the exploitable ones.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hanm/zookeeper ZOOKEEPER-2693-br-3.4
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zookeeper/pull/183.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #183
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