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Edit template, Remote Code Execution (RCE) Vulnerability in Latest Release 4.4.0

High severity GitHub Reviewed Published Oct 29, 2020 in baserproject/basercms • Updated Jan 9, 2023

Package

composer baserproject/basercms (Composer)

Affected versions

>= 4.4.0, < 4.4.1

Patched versions

4.4.1

Description

baserCMS 4.4.0 and earlier is affected by Remote Code Execution (RCE).

Impact: XSS via Arbitrary script execution.
Attack vector is: Administrator must be logged in.
Components are: Edit template.
Tested baserCMS Version : 4.4.0 (Latest)
Affected baserCMS Version : 4.0.0 ~ 4.4.0
Patches : https://basercms.net/security/20201029
Found by Aquilao Null

References

@baserproject baserproject published to baserproject/basercms Oct 29, 2020
Reviewed Oct 30, 2020
Published to the GitHub Advisory Database Oct 30, 2020
Last updated Jan 9, 2023

Severity

High

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
High
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:H/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.915%
(83rd percentile)

Weaknesses

CVE ID

CVE-2020-15277

GHSA ID

GHSA-6fmv-q269-55cw

Source code

No known source code

Credits

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