Information Exposure Affecting mediawiki/core package, versions <1.23.16>=1.24.0, <1.27.2>=1.28.0, <1.28.1


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.41% (75th percentile)

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  • Snyk IDSNYK-PHP-MEDIAWIKICORE-2407583
  • published20 Feb 2022
  • disclosed20 Feb 2022
  • creditUnknown

Introduced: 20 Feb 2022

CVE-2017-0371  (opens in a new tab)
CWE-200  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade mediawiki/core to version 1.23.16, 1.27.2, 1.28.1 or higher.

Overview

mediawiki/core is a Free software wiki application developed by the Wikimedia Foundation and others.

Note: This package is not maintained on Packagist anymore, but newer releases exist.

Affected versions of this package are vulnerable to Information Exposure via the attr() function which can interpret attributes as different types, including 'URL', which is interpreted as a quoted sting with the url() notation. This allows remote attackers to discover the IP addresses of Wiki visitors via a style="background-image: attr(title url);" attack within a DIV element that has an attacker-controlled URL in the title attribute.

CVSS Scores

version 3.1