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Eclipse Vert.x does not properly neutralize '' (forward slashes) sequences that can resolve to an external location

Critical severity GitHub Reviewed Published Oct 17, 2018 to the GitHub Advisory Database • Updated Apr 5, 2023

Package

maven io.vertx:vertx-web (Maven)

Affected versions

>= 3.0.0, < 3.5.4

Patched versions

3.5.4

Description

In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the StaticHandler uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '' (forward slashes) sequences that can resolve to a location that is outside of that directory when running on Windows Operating Systems.

References

Published to the GitHub Advisory Database Oct 17, 2018
Reviewed Jun 16, 2020
Last updated Apr 5, 2023

Severity

Critical

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
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.233%
(62nd percentile)

Weaknesses

CVE ID

CVE-2018-12542

GHSA ID

GHSA-h39x-m55c-v55h

Source code

Credits

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