Significant security vulnerability discovered in Log4j

[Steven Smith]

Also please see https://github.com/macports/macports-ports/pull/13361 <https://github.com/macports/macports-ports/pull/13361>

> On Dec 14, 2021, at 6:47 PM, Nils Breunese <nils at breun.nl> wrote:
> 
> A couple of hours ago https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45046 <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45046> was made public, which states that the previous mitigations of upgrading to Log4J 2.15.0 or setting system/environment properties is longer enough. The recommended solution is upgrading to Log4J 2.16.0. If that is not possible, it is recommended to at least remove the JndiLookup class from the log4j-core JAR (e.g. zip -q -d log4j-core-*.jar org/apache/logging/log4j/core/lookup/JndiLookup.class).

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