PT-2021-17657 · Craft Cms · Craft Cms

Published 2021-06-30 · Updated 2022-07-12 · CVE-2021-27903

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Craft CMS versions prior to 3.6.7

Description: A potential Remote Code Execution issue existed in certain circumstances on sites that did not restrict administrative changes, particularly if an attacker could hijack an administrator's session.

Recommendations: For versions prior to 3.6.7, update to version 3.6.7 or later to resolve the issue. As a temporary workaround, consider restricting administrative changes and ensuring session security to minimize the risk of exploitation.

Fix

RCE

Code Injection

Missing Authorization

Special Elements Injection

Weakness Enumeration

CWE-94

CWE-862

CWE-74

Related Identifiers

CVE-2021-27903

GHSA-X2J7-6HXM-87P3

Affected Products

Craft Cms

References · 8

• https://github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38 · Patch
• https://osv.dev/vulnerability/CVE-2021-27903 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-x2j7-6hxm-87p3 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27903 · Security Note
• https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#367---2021-02-23 · Note
• https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#security · Note
• https://t.me/cibsecurity/25820 · Telegram Post
• https://t.me/cvenotify/16905 · Telegram Post