Debian Long Term Support / LTS Security Information / 2020 / Security Information -- DLA-2504-1 mediawiki

Debian Security Advisory

DLA-2504-1 mediawiki -- LTS security update

Date Reported:

22 Dec 2020

Affected Packages:

mediawiki

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2020-15005, CVE-2020-35477, CVE-2020-35479, CVE-2020-35480.

More information:

Multiple security issues were discovered in MediaWiki, a website engine for collaborative work.

• CVE-2020-15005

  Private wikis behind a caching server using the img_auth.php image authorization security feature may have had their files cached publicly, so any unauthorized user could view them.

• CVE-2020-35477

  Blocks legitimate attempts to hide log entries in some situations.

• CVE-2020-35479

  Allows XSS via BlockLogFormatter.php. Language::translateBlockExpiry itself does not escape in all code paths. For example, the return of Language::userTimeAndDate is is always unsafe for HTML in a month value.

• CVE-2020-35480

  Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers.

For Debian 9 stretch, these problems have been fixed in version 1:1.27.7-1~deb9u7.

We recommend that you upgrade your mediawiki packages.

For the detailed security status of mediawiki please refer to its security tracker page at: https://security-tracker.debian.org/tracker/mediawiki

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS