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Apache Tomcat unauthorized access vulnerability

Moderate severity GitHub Reviewed Published Oct 17, 2018 to the GitHub Advisory Database • Updated Feb 23, 2024

Package

maven org.apache.tomcat.embed:tomcat-embed-core (Maven)

Affected versions

>= 9.0.0, <= 9.0.4
>= 8.5.0, < 8.5.28
>= 8.0.0, < 8.0.51
>= 7.0.0, < 7.0.86

Patched versions

9.0.5
8.5.28
8.0.51
7.0.86

Description

The URL pattern of "" (the empty string) which exactly maps to the context root was not correctly handled in Apache Tomcat 9.0.0.M1 to 9.0.4, 8.5.0 to 8.5.27, 8.0.0.RC1 to 8.0.49 and 7.0.0 to 7.0.84 when used as part of a security constraint definition. This caused the constraint to be ignored. It was, therefore, possible for unauthorised users to gain access to web application resources that should have been protected. Only security constraints with a URL pattern of the empty string were affected.

References

Published by the National Vulnerability Database Feb 28, 2018
Published to the GitHub Advisory Database Oct 17, 2018
Reviewed Jun 16, 2020
Last updated Feb 23, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.276%
(69th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2018-1304

GHSA ID

GHSA-6rxj-58jh-436r

Source code

Credits

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