WordPress 5.0.1 Security Release

WordPress 5.0.1 is now available. This is a security release for all versions since WordPress 3.7. We strongly encourage you to update your sites immediately.

Plugin authors are encouraged to read the 5.0.1 developer notes for information on backwards-compatibility.

WordPress versions 5.0 and earlier are affected by the following bugs, which are fixed in version 5.0.1. Updated versions of WordPress 4.9 and older releases are also available, for users who have not yet updated to 5.0.

  • Karim El Ouerghemmi discovered that authors could alter metadata to delete files that they weren’t authorized to.
  • Simon Scannell of RIPS Technologies discovered that authors could create posts of unauthorized post types with specially crafted input.
  • Sam Thomas discovered that contributors could craft metadata in a way that resulted in PHP object injection.
  • Tim Coen discovered that contributors could edit new comments from higher-privileged users, potentially leading to a cross-site scripting vulnerability.
  • Tim Coen also discovered that specially crafted URL inputs could lead to a cross-site scripting vulnerability in some circumstances. WordPress itself was not affected, but plugins could be in some situations.
  • Team Yoast discovered that the user activation screen could be indexed by search engines in some uncommon configurations, leading to exposure of email addresses, and in some rare cases, default generated passwords.
  • Tim Coen and Slavco discovered that authors on Apache-hosted sites could upload specifically crafted files that bypass MIME verification, leading to a cross-site scripting vulnerability.

Thank you to all of the reporters for privately disclosing the vulnerabilities, which gave us time to fix them before WordPress sites could be attacked.

Download WordPress 5.0.1, or venture over to Dashboard → Updates and click Update Now. Sites that support automatic background updates are already beginning to update automatically.

In addition to the security researchers mentioned above, thank you to everyone who contributed to WordPress 5.0.1:

Alex ShielsAlex ConchaAnton TimmermansAndrew OzzAaron CampbellAndrea MiddletonBen BidnerBarry AbrahamsonChris ChristoffDavid NewmanDemitrious KellyDion HulseHannah NotessGary PendergastHerre GroenIan DunnJeremy FeltJoe McGillJohn James JacobyJonathan DesrosiersJosepha HadenJoost de ValkMo JangdaNick DaughertyPeter WilsonPascal BirchlerSergey Biryukov, and Valentyn Pylypchuk.

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.

 

Original article posted here – http://bit.ly/2DUpRFI