Thank you for the info on the ordering of entries and suggestion to use additivity="false".
It's somewhat concerning that there doesn't seem to be a way to confidently ensure that plaintext passwords won't be logged. While I could see using a canary/tripwire password value as an alarm of last resort, by the time it was detected, damage would have been done. In the wrong environment, this could result in required mitigation and remediation work. On Mon, Jul 5, 2021 at 8:02 AM Ray Bon <[email protected]> wrote: > Baron, > > The order of the loggers does not matter, just specificity. You might want > to include additivity so nothing bubbles up to more general loggers. > > <AsyncLogger name="specific.reference.to.Class" level="trace" > additivity="false"> > <AppenderRef ref="sensitiveloggerfile" /> > </AsyncLogger> > > You will have to keep an eye on your log output to track sensitive > details. Perhaps a test user with a distinctive password that could be > searched with a cron script. Searching cas code base for 'password' may be > to general and would not catch printing of collections. > > Ray > > On Fri, 2021-07-02 at 16:41 -1000, Baron Fujimoto wrote: > > Notice: This message was sent from outside the University of Victoria > email system. Please be cautious with links and sensitive information. > > When our CAS starts up, it warns: > WARN > [org.springframework.security.config.annotation.web.builders.WebSecurity] - > < > ******************************************************************** > ********** Security debugging is enabled. ************* > ********** This may include sensitive information. ************* > ********** Do not use in a production system! ************* > ******************************************************************** > > > > And I find log entries such as the following where the password is logged > in plaintext: > DEBUG > [org.apereo.cas.web.flow.resolver.impl.AbstractCasWebflowEventResolver] - > <Issuing ticket-granting tickets for service > [AbstractWebApplicationService(id=https://www.example.com/app, > originalUrl=https://www.example.com/app, artifactId=null, principal=null, > source=service, loggedOutAlready=false, format=XML, > attributes={execution=[...], password=[PASSWORD], _eventId=[submit], > username=[USERNAME], geolocation=[]})]> > > I assume this is the result of the following in log4j2.xml? > > <Property name="cas.log.level">debug</Property> > ... > <AsyncLogger name="org.apereo.cas.web.flow" > level="${sys:cas.log.level}" includeLocation="true"/> > > For hosts where we do want detailed debug-level logs (but do not want to > reveal passwords) can this be mitigated via a cas property to redact the > passwords? Or should it be handled via logging conf something like this? > > <Property name="cas.log.level">debug</Property> > <Property name="cas.log.level.sensitive">info</Property> > ... > <AsyncLogger > name="org.apereo.cas.web.flow.resolver.impl.AbstractCasWebflowEventResolver" > level="${sys:cas.log.level.sensitive}" includeLocation="true"/> > <AsyncLogger name="org.apereo.cas.web.flow" > level="${sys:cas.log.level}" includeLocation="true"/> > > If this is the correct approach, is this sufficient to eliminate the log > entries containing plaintext passwords, or are there additional classes(?) > we need to worry about as well? Does the order of the AsyncLogger entries > matter? > > -- > Baron Fujimoto <[email protected]> :: UH Information Technology Services > minutas cantorum, minutas balorum, minutas carboratum desendus pantorum > > -- > - Website: https://apereo.github.io/cas > - Gitter Chatroom: https://gitter.im/apereo/cas > - List Guidelines: https://goo.gl/1VRrw7 > - Contributions: https://goo.gl/mh7qDG > --- > You received this message because you are subscribed to the Google Groups > "CAS Community" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/a/apereo.org/d/msgid/cas-user/1ef4d709940b6ab6a388df1e282b710dd510d82c.camel%40uvic.ca > <https://groups.google.com/a/apereo.org/d/msgid/cas-user/1ef4d709940b6ab6a388df1e282b710dd510d82c.camel%40uvic.ca?utm_medium=email&utm_source=footer> > . > -- Baron Fujimoto <[email protected]> :: UH Information Technology Services minutas cantorum, minutas balorum, minutas carboratum desendus pantorum -- - Website: https://apereo.github.io/cas - Gitter Chatroom: https://gitter.im/apereo/cas - List Guidelines: https://goo.gl/1VRrw7 - Contributions: https://goo.gl/mh7qDG --- You received this message because you are subscribed to the Google Groups "CAS Community" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/apereo.org/d/msgid/cas-user/CAAjLUL2Wm13MS04DKBb%2ByicKBB94zVf8dVYwXagXBdc_5aH%2BJQ%40mail.gmail.com.
