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sr_freecap for Typo3 RCE Vulnerability

Critical severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Sep 26, 2023

Package

composer sjbr/sr-freecap (Composer)

Affected versions

>= 2.5.0, < 2.5.3
< 2.4.6

Patched versions

2.5.3
2.4.6

Description

The sr_freecap (aka freeCap CAPTCHA) extension 2.4.5 and below and 2.5.2 and below for TYPO3 fails to sanitize user input, which allows execution of arbitrary Extbase actions, resulting in Remote Code Execution.

References

Published by the National Vulnerability Database Oct 16, 2019
Published to the GitHub Advisory Database May 24, 2022
Reviewed Jul 18, 2023
Last updated Sep 26, 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

1.641%
(88th percentile)

Weaknesses

CVE ID

CVE-2019-16699

GHSA ID

GHSA-598p-rv6p-g7qc

Source code

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