Access Restriction Bypass Affecting tomcat-webapps package, versions <0:7.0.76-2.el7


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.13% (50th percentile)

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  • Snyk IDSNYK-RHEL7-TOMCATWEBAPPS-5205956
  • published26 Jul 2021
  • disclosed27 Oct 2016

Introduced: 27 Oct 2016

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

How to fix?

Upgrade RHEL:7 tomcat-webapps to version 0:7.0.76-2.el7 or higher.
This issue was patched in RHSA-2017:2247.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-webapps package and not the tomcat-webapps package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1