CVE-2016-0762
mediumpriority · track · 27EPSS 0.080 · 95 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (58)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-wxcp-f2c8-x6xvObservable Discrepancy in Apache Tomcat2022-05-13ghsa · osvUS
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.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (79)
External citations — patches, advisories, analysis.
- http://rhn.redhat.com/errata/RHSA-2017-0457.htmlcnnvd
- http://tomcat.apache.org/security-9.htmlPatchcnnvd
- http://www.debian.org/security/2016/dsa-3720cnnvd
- http://www.securityfocus.com/bid/93939cnnvd
- http://www.securitytracker.com/id/1037144cnnvd
- https://access.redhat.com/errata/RHSA-2017:0455cnnvd
- https://access.redhat.com/errata/RHSA-2017:0456cnnvd
- https://access.redhat.com/errata/RHSA-2017:2247cnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan