[
https://issues.apache.org/jira/browse/LOG4J2-3221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17459279#comment-17459279
]
Tero Marttila commented on LOG4J2-3221:
---------------------------------------
I have also sent an email to
[priv...@logging.apache.org|mailto:priv...@logging.apache.org] with my analysis
of the impact of this issue on current CVE-2021-44228 mitigation efforts, and
potential issues in current 2.15 releases. I would appreciate some kind of
response or confirmation of this information.
Refer to my initial GitHub comment:
https://github.com/apache/logging-log4j2/pull/608#issuecomment-993469509
> JNDI lookups in layout (not message patterns) enabled in Log4j2 < 2.16.0
> ------------------------------------------------------------------------
>
> Key: LOG4J2-3221
> URL: https://issues.apache.org/jira/browse/LOG4J2-3221
> Project: Log4j 2
> Issue Type: Bug
> Reporter: Lucy Menon
> Priority: Major
>
> The mitigation advice for CVE-2021-4428 suggests that for Log4j > 2.10.0 and
> < 2.15.0, the vulnerability can be avoided by setting
> -{{{}Dlog4j2.formatMsgNoLookups=true{}}} or upgrading to 2.15.0. However,
> many users may not be aware that even in this case, lookups used in layouts
> to provide specific pieces of context information will still recursively
> resolve, possibly triggering JNDI lookups. In order to avoid
> attacker-controlled JNDI lookups, users must also either:
> * Ensure that no such lookups resolve to attacker-provided data
> * Ensure that the the JndiLookup class is not loaded
> * Upgrade to log4j2 2.16.0 (untested)
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
