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Echo vulnerable to directory traversal

Moderate severity GitHub Reviewed Published Dec 7, 2022 to the GitHub Advisory Database • Updated Jan 28, 2023

Package

gomod github.com/labstack/echo/v4 (Go)

Affected versions

< 4.2.0

Patched versions

4.2.0

Description

Due to improper sanitization of user input on Windows, the static file handler allows for directory traversal, allowing an attacker to read files outside of the target directory that the server has permission to read.

References

Published by the National Vulnerability Database Dec 7, 2022
Published to the GitHub Advisory Database Dec 7, 2022
Reviewed Dec 7, 2022
Last updated Jan 28, 2023

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
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.079%
(36th percentile)

Weaknesses

CVE ID

CVE-2020-36565

GHSA ID

GHSA-j453-hm5x-c46w

Source code

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