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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-728-1 tomcat6 security update
Debian DLA Debian DLA DLA-729-1 tomcat7 security update
Debian DSA Debian DSA DSA-3720-1 tomcat8 security update
Debian DSA Debian DSA DSA-3721-1 tomcat7 security update
EUVD EUVD EUVD-2022-5668 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.
Github GHSA Github GHSA GHSA-wxcp-f2c8-x6xv Observable Discrepancy in Apache Tomcat
Ubuntu USN Ubuntu USN USN-3177-1 Tomcat vulnerabilities
Ubuntu USN Ubuntu USN USN-4557-1 Tomcat vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
http://rhn.redhat.com/errata/RHSA-2017-0457.html cve-icon cve-icon
http://www.debian.org/security/2016/dsa-3720 cve-icon cve-icon
http://www.securityfocus.com/bid/93939 cve-icon cve-icon
http://www.securitytracker.com/id/1037144 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2017:0455 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2017:0456 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2017:2247 cve-icon cve-icon
https://lists.apache.org/thread.html/1872f96bad43647832bdd84a408794cd06d9cbb557af63085ca10009%40%3Cannounce.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2016-0762 cve-icon
https://security.netapp.com/advisory/ntap-20180605-0001/ cve-icon cve-icon
https://tomcat.apache.org/security-6.html#Fixed_in_Apache_Tomcat_6.0.47 cve-icon
https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.72 cve-icon
https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.5_and_8.0.37 cve-icon
https://usn.ubuntu.com/4557-1/ cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2016-0762 cve-icon
https://www.oracle.com//security-alerts/cpujul2021.html cve-icon cve-icon
https://www.oracle.com/security-alerts/cpuoct2021.html cve-icon cve-icon
History

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00678}

epss

{'score': 0.00919}


cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2024-09-17T01:36:51.388Z

Reserved: 2015-12-16T00:00:00

Link: CVE-2016-0762

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2017-08-10T16:29:00.313

Modified: 2025-04-20T01:37:25.860

Link: CVE-2016-0762

cve-icon Redhat

Severity : Low

Publid Date: 2016-10-27T00:00:00Z

Links: CVE-2016-0762 - Bugzilla

cve-icon OpenCVE Enrichment

No data.