PT-2022-11474 · Craft Cms · Seomatic

Published 2022-06-12 · Updated 2022-06-17 · CVE-2021-41750

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions SEOmatic plugin version 3.4.10 for Craft CMS 3

Description A cross-site scripting (XSS) issue allows remote attackers to inject arbitrary web script via a GET to "/index.php?action=seomatic/file/seo-file-link" with url parameter containing the base64 encoded URL of a malicious web page or file and fileName parameter containing an arbitrary filename with the intended content-type to be rendered in the user's browser as the extension.

Recommendations For SEOmatic plugin version 3.4.10, consider disabling the "/index.php?action=seomatic/file/seo-file-link" endpoint until a patch is available. Restrict access to the url and fileName parameters in the affected endpoint to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-41750

GHSA-6HJC-M38H-7JHH

Affected Products

Seomatic

References · 8

• https://github.com/nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a87b2873 · Patch
• https://github.com/nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca1981c8 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-41750 · Security Note
• https://osv.dev/vulnerability/GHSA-6hjc-m38h-7jhh · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-41750 · Vendor Advisory
• https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.md · Note
• https://github.com/nystudio107/craft-seomatic · Note
• https://t.me/cvenotify/31804 · Telegram Post