Nystudio107 SEOmatic Plugin 3.4.10 on Craft CMS Base64 Encoded URL seo-file-link cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Nystudio107 SEOmatic Plugin 3.4.10 on Craft CMS. Affected by this vulnerability is an unknown functionality of the file /index.php?action=seomatic/file/seo-file-link of the component Base64 Encoded URL Handler. The manipulation results in cross site scripting. This vulnerability is known as CVE-2021-41750. It is possible to launch the attack remotely. No exploit is available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Nystudio107 SEOmatic Plugin 3.4.10 on Craft CMS. Affected is some unknown functionality of the file /index.php?action=seomatic/file/seo-file-link of the component Base64 Encoded URL Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

A cross-site scripting (XSS) vulnerability in the SEOmatic plugin 3.4.10 for Craft CMS 3 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 / file and fileName parameter containing an arbitrary filename with the intended content-type to be rendered in the user's browser as the extension.

The weakness was published 06/13/2022 as 4e46b792ce973ac0c652fb330055f41aca1981c8. The advisory is available at github.com. This vulnerability is traded as CVE-2021-41750 since 09/27/2021. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Applying the patch 4e46b792ce973ac0c652fb330055f41aca1981c8 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 4e46b792ce973ac0c652fb330055f41aca1981c8

Timelineinfo

09/27/2021 🔍
06/13/2022 +259 days 🔍
06/13/2022 +0 days 🔍
06/13/2022 +0 days 🔍

Sourcesinfo

Advisory: 4e46b792ce973ac0c652fb330055f41aca1981c8
Status: Confirmed

CVE: CVE-2021-41750 (🔍)
GCVE (CVE): GCVE-0-2021-41750
GCVE (VulDB): GCVE-100-201630

Entryinfo

Created: 06/13/2022 06:41
Changes: 06/13/2022 06:41 (44)
Complete: 🔍
Cache ID: 216::103

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