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                             CERT-Renater

                 Note d'Information No. 2018/VULN022
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DATE                : 17/01/2018

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running wordpress versions prior to 4.9.2.

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https://wordpress.org/news/2018/01/wordpress-4-9-2-security-and-maintenance-release/
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WordPress 4.9.2 Security and Maintenance Release
Posted January 16, 2018 by Ian Dunn. Filed under Releases, Security.


WordPress 4.9.2 is now available. This is a security and maintenance
release for all versions since WordPress 3.7. We strongly encourage you
to update your sites immediately.

An XSS vulnerability was discovered in the Flash fallback files in
MediaElement, a library that is included with WordPress. Because the
Flash files are no longer needed for most use cases, they have been
removed from WordPress.

MediaElement has released a new version that contains a fix for the
bug, and a WordPress plugin containing the fixed files is available in
the plugin repository.

Thank you to the reporters of this issue for practicing responsible
security disclosure: Enguerran Gillier and Widiz.

21 other bugs were fixed in WordPress 4.9.2. Particularly of note were:

    JavaScript errors that prevented saving posts in Firefox have been
     fixed.
    The previous taxonomy-agnostic behavior of get_category_link() and
     category_description() was restored.
    Switching themes will now attempt to restore previous widget
     assignments, even when there are no sidebars to map.

The Codex has more information about all of the issues fixed in 4.9.2,
if you'd like to learn more.

Download WordPress 4.9.2 or venture over to Dashboard → Updates and
click "Update Now." Sites that support automatic background updates are
already beginning to update automatically.

Thank you to everyone who contributed to WordPress 4.9.2:

0x6f0, Aaron Jorbin, Andrea Fercia, Andrew Duthie, Andrew Ozz,
Blobfolio, Boone Gorges, Caleb Burks, Carolina Nymark, chasewg, Chetan
Prajapati, Dion Hulse, Hardik Amipara, ionvv, Jason Caldwell, Jeffrey
Paul, Jeremy Felt, Joe McGill, johnschulz, Juhi Patel, Konstantin
Obenland, Mark Jaquith, Nilambar Sharma, Peter Wilson, Rachel Baker,
Rinku Y, Sergey Biryukov, and Weston Ruter.

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+ CERT-RENATER          | tel : 01-53-94-20-44           +
+ 23 - 25 Rue Daviel    | fax : 01-53-94-20-41           +
+ 75013 Paris           | email: cert@support.renater.fr +
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