CVE-2023-5547 Moodle: xss risk when previewing data in course upload tool

What is CVE-2023-5547?

CVE-2023-5547 is a low-severity cross-site scripting vulnerability in Fedoraproject Fedora, published on 9 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

The course upload preview contained an XSS risk for users uploading unsafe data.

Weakness: CWE-79

Which versions are affected by CVE-2023-5547?

3 open source packages ship an affected version, including moodle/moodle and moodle. It affects 3 products.

Products include Fedoraproject Fedora, Moodle Moodle, Redhat Enterprise Linux.

How do I fix CVE-2023-5547?

Upgrade moodle/moodle to 4.3.0-rc2 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-5547 being exploited?

There is no known exploitation of CVE-2023-5547 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-moodle-2023-5547, GHSA-9gqp-3g28-w9xc, UBUNTU-CVE-2023-5547.