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phpBB Cross-Site Request Forgery (CSRF)

High severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Apr 24, 2024

Package

composer phpbb/phpbb (Composer)

Affected versions

< 3.1.7-PL1

Patched versions

3.1.7-PL1

Description

In phpBB before 3.1.7-PL1, includes/acp/acp_bbcodes.php has improper verification of a CSRF token on the BBCode page in the Administration Control Panel. An actual CSRF attack is possible if an attacker also manages to retrieve the session id of a reauthenticated administrator prior to targeting them.

References

Published by the National Vulnerability Database Sep 30, 2019
Published to the GitHub Advisory Database May 24, 2022
Reviewed Apr 24, 2024
Last updated Apr 24, 2024

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
Required
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:R/S:U/C:H/I:H/A:H

EPSS score

0.553%
(78th percentile)

Weaknesses

CVE ID

CVE-2019-16993

GHSA ID

GHSA-vj3x-vfm4-hvxc

Source code

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