CVE-2023-28120 – activesupport

Package

Manager: gem
Name: activesupport
Vulnerable Version: >=7.0.0 <7.0.4.3 || >=0 <6.1.7.3

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: 0.001 pctl0.28363

Details

Possible XSS Security Vulnerability in SafeBuffer#bytesplice There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input. This vulnerability has been assigned the CVE identifier CVE-2023-28120. Versions Affected: All. Not affected: None Fixed Versions: 7.0.4.3, 6.1.7.3 # Impact ActiveSupport uses the SafeBuffer string subclass to tag strings as html_safe after they have been sanitized. When these strings are mutated, the tag is should be removed to mark them as no longer being html_safe. Ruby 3.2 introduced a new bytesplice method which ActiveSupport did not yet understand to be a mutation. Users on older versions of Ruby are likely unaffected. All users running an affected release and using bytesplice should either upgrade or use one of the workarounds immediately. # Workarounds Avoid calling bytesplice on a SafeBuffer (html_safe) string with untrusted user input.

Metadata

Created: 2023-03-15T21:36:01Z
Modified: 2025-01-10T18:32:43Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-pj73-v5mw-pm9j/GHSA-pj73-v5mw-pm9j.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-pj73-v5mw-pm9j
Finding: F008
Auto approve: 1