Skip to content

Showdoc File Upload Vulnerability

Critical severity GitHub Reviewed Published Oct 25, 2021 to the GitHub Advisory Database • Updated Sep 21, 2023

Package

composer showdoc/showdoc (Composer)

Affected versions

< 2.8.5

Patched versions

2.8.5

Description

A file upload vulnerability exists in Showdoc 2.8.3, which can be exploited by an attacker to gain server privileges.

References

Published by the National Vulnerability Database Oct 22, 2021
Reviewed Oct 25, 2021
Published to the GitHub Advisory Database Oct 25, 2021
Last updated Sep 21, 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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.268%
(68th percentile)

Weaknesses

CVE ID

CVE-2021-41745

GHSA ID

GHSA-4286-h47h-m5v6

Source code

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.