The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.
                
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References
        History
                    Sun, 13 Jul 2025 13:45:00 +0000
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 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: apache
Published: 2017-08-10T16:00:00Z
Updated: 2024-09-17T01:36:51.388Z
Reserved: 2015-12-16T00:00:00
Link: CVE-2016-0762
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Deferred
Published: 2017-08-10T16:29:00.313
Modified: 2025-04-20T01:37:25.860
Link: CVE-2016-0762
 Redhat
                        Redhat