CVE-2023-45889: oneclick XSS — Exploit

Description

A Universal Cross Site Scripting (UXSS) vulnerability in ClassLink OneClick Extension through 10.8 allows remote attackers to inject JavaScript into any webpage. NOTE: this issue exists because of an incomplete fix for CVE-2022-48612.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
classlink	oneclick	< 10.8

References

Exploits

https://blog.zerdle.net/classlink2/ https://blog.zerdle.net/classlink2/

Other References

https://blog.zerdle.net/classlink/ https://blog.zerdle.net/classlink/

Frequently Asked Questions

What is CVE-2023-45889? +

A Universal Cross Site Scripting (UXSS) vulnerability in ClassLink OneClick Extension through 10.8 allows remote attackers to inject JavaScript into any webpage. NOTE: this issue exists because of an incomplete fix for CVE-2022-48612. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2023-45889? +

CVE-2023-45889 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-45889? +

CVE-2023-45889 affects products from classlink, specifically: oneclick. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-45889? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-45889