Access Restriction Bypass Affecting tomcat package, versions [,6.0.47)[7.0.0, 7.0.72)[8.0.0, 8.0.37)[8.5.0, 8.5.5)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.32% (71st percentile)

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  • Snyk IDSNYK-UNMANAGED-TOMCAT-2382406
  • published26 Jan 2022
  • disclosed10 Aug 2017
  • creditUnknown

Introduced: 10 Aug 2017

CVE-2016-0762  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade tomcat to version 6.0.47, 7.0.72, 8.0.37, 8.5.5 or higher.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass. 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 Scores

version 3.1