CVE-2012-4377 Cross-site scripting in n/a

What is CVE-2012-4377?

CVE-2012-4377 is a medium-severity cross-site scripting vulnerability in Mediawiki Mediawiki, published on 26 Oct 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross-site scripting (XSS) vulnerability in MediaWiki before 1.18.5 and 1.19.x before 1.19.2 allows remote attackers to inject arbitrary web script or HTML via a File: link to a nonexistent image.

Weakness: CWE-79

Which versions are affected by CVE-2012-4377?

It affects 1 product.

Products include Mediawiki Mediawiki.

How do I fix CVE-2012-4377?

Upgrade to a fixed version.

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-2012-4377 being exploited?

There is no known exploitation of CVE-2012-4377 in the wild and no public exploit code.

Other vulnerabilities in Mediawiki Mediawiki

• CVE-2023-37303 Denial of service in n/a Critical 9.8
• CVE-2022-29904 SQL injection in n/a Critical 9.8
• CVE-2022-29906 Missing authorization in n/a Critical 9.8
• CVE-2022-28205 Business logic in n/a Critical 9.8
• CVE-2022-28206 Missing authorization in n/a Critical 9.8

All Mediawiki Mediawiki vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2012-4377, GHSA-rcq7-gcq5-jx2v.