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Local File Inclusion by unauthenticated users

High severity GitHub Reviewed Published Nov 22, 2020 in octobercms/october • Updated Feb 1, 2023

Package

composer october/cms (Composer)

Affected versions

>= 1.0.421, < 1.0.469

Patched versions

1.0.469

Description

Impact

An attacker can exploit this vulnerability to read local files on an October CMS server. The vulnerability is exploitable by unauthenticated users via a specially crafted request.

Patches

Issue has been patched in Build 469 (v1.0.469) and v1.1.0.

Workarounds

Apply octobercms/library@80aab47 to your installation manually if unable to upgrade to Build 469.

References

Reported by ka1n4t

For more information

If you have any questions or comments about this advisory:

Threat assessment:

Screen Shot 2020-10-10 at 1 05 19 PM

### References - https://github.com/octobercms/october/security/advisories/GHSA-xwjr-6fj7-fc6h - https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4 - https://nvd.nist.gov/vuln/detail/CVE-2020-15246
@LukeTowers LukeTowers published to octobercms/october Nov 22, 2020
Reviewed Nov 23, 2020
Published to the GitHub Advisory Database Nov 23, 2020
Published by the National Vulnerability Database Nov 23, 2020
Last updated Feb 1, 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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(53rd percentile)

Weaknesses

CVE ID

CVE-2020-15246

GHSA ID

GHSA-xwjr-6fj7-fc6h

Source code

Credits

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