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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3048 WordPress 5.8.1 Security and Maintenance Release 10 September 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: WordPress Publisher: WordPress Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Increased Privileges -- Unknown/Unspecified Cross-site Scripting -- Unknown/Unspecified Access Confidential Data -- Unknown/Unspecified Reduced Security -- Unknown/Unspecified Resolution: Patch/Upgrade Original Bulletin: https://wordpress.org/news/2021/09/wordpress-5-8-1-security-and-maintenance-release/ - --------------------------BEGIN INCLUDED TEXT-------------------- WordPress 5.8.1 Security and Maintenance Release Posted September 9, 2021 by Jonathan Desrosiers . Filed under Releases , Security . WordPress 5.8.1 is now available! This security and maintenance release features 60 bug fixes in addition to 3 security fixes. Because this is a security release , it is recommended that you update your sites immediately. All versions since WordPress 5.4 have also been updated. WordPress 5.8.1 is a short-cycle security and maintenance release. The next major release will be version 5.9 . You can download WordPress 5.8.1 by downloading from WordPress.org, or visit your Dashboard -> Updates and click Update Now. If you have sites that support automatic background updates, they've already started the update process. Security Updates 3 security issues affect WordPress versions between 5.4 and 5.8. If you haven't yet updated to 5.8, all WordPress versions since 5.4 have also been updated to fix the following security issues: o Props @ mdawaffe , member of the WordPress Security Team for their work fixing a data exposure vulnerability within the REST API. o Props to Michal Bentkowski of Securitum for reporting a XSS vulnerability in the block editor. o The Lodash library has been updated to version 4.17.21 in each branch to incorporate upstream security fixes. In addition to these issues, the security team would like to thank the following people for reporting vulnerabilities during the WordPress 5.8 beta testing period, allowing them to be fixed prior to release: o Props Evan Ricafort for reporting a XSS vulnerability in the block editor discovered during the 5.8 release's beta period. o Props Steve Henty for reporting a privilege escalation issue in the block editor. Thank you to all of the reporters for privately disclosing the vulnerabilities . This gave the WordPress security team time to fix the vulnerabilities before WordPress sites could be attacked. For more information, browse the full list of changes on Trac, or check out the version 5.8.1 HelpHub documentation page . Thanks and props! The 5.8.1 release was led by Jonathan Desrosiers and Evan Mullins . In addition to the security researchers and release squad members mentioned above, thank you to everyone who helped make WordPress 5.8.1 happen: 2linctools , Adam Zielinski , Alain Schlesser , Alex Lende , alexstine , AlGala , Andre , Andrei Draganescu , Andrew Ozz , Ankit Panchal , Anthony Burchell , Anton Vlasenko , Ari Stathopoulos , Bruno Ribaric , Carolina Nymark , Daisy Olsen , Daniel Richards , Daria , David Anderson , David Binovec , David Herrera , Dominik Schilling , Ella van Durpe , Enchiridion , Evan Mullins , Gary Jones , George Mamadashvili , Greg Ziolkowski , Hector Prieto , ianmjones , Jb Audras , Jeff Bowen , Joe Dolson , Joen A. , John Blackbourn , Jonathan Desrosiers , JuanMa Garrido , Juliette Reinders Folmer , Kai Hao , Kapil Paul , Kerry Liu , Kevin Fodness , Marcus Kazmierczak , Mark-k , Matt , Michael Adams (mdawaffe) , Mike Schroder , moch11 , Mukesh Panchal , Nik Tsekouras , Paal Joachim Romdahl , Pascal Birchler , Paul Bearne , Paul Biron , Peter Wilson , Petter Walbo Johnsgard , Radixweb , Rahul Mehta , ramonopoly , ravipatel , Riad Benguella , Robert Anderson , Rodrigo Arias , Sanket Chodavadiya , Sergey Biryukov , Stephen Bernhardt , Stephen Edgar , Steve Henty , terraling , Timothy Jacobs , tmatsuur , TobiasBg , Tonya Mork , Toro_Unit (Hiroshi Urabe) , Vlad T , wb1234 , and WFMattR . - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYTqyrONLKJtyKPYoAQie1w//WkgRJYBtsNyVMzY/GqO54uTV7D8SbvDF aVYXuFo3ejAwW9EbXaQUXzh/30ClYtdogFo761KA3Gps6Pyydj54bb3rb/f9mFzE 65F5O/HGhMY5CvCLXGmLb24fsEnfDP1u5UTTtrWUGE9E15DOxK6/R3i8Q9OCtNoM av5nXYXl3sNi13tqNBpHC63GnnvIw2ixXUlxG0Znn7WTHENuIPE4XzTZ97egA1Mn ROv2UlpltQ3gpFolMct1JePDoshJbv5SEYhDPEW+zwIhk6TD7o3CEB7vUUwLZJth a1/xx9Skju8upci6gqdaRIgZrWOdokimVzfN0AjJglB37tIYOT3X4h6CI5fBjSMI g4Rr6n8qxb7tW+NEq0Lwtq/3DVpotRtoS5q/HkGmWKlSPG/baWHwyrZmDK5bE5eo +rjJmZQuiUbCg9hsqvCOZtRsEfAwypw/V6rR69z3MHzGoUX63WpIKAYOCVitLr2n fcEx6eh4o/8bhAU/CMoyDm+vMNq/vPmayNI1VfCDIm/ibx72zOHB8MvF66J7Pj6Q AIyTX/YD+ejQaRRcxBiR3dzUN+KiMO0n9+XIgrrfArrRqsW05zGzuXhFTtlMfWZ0 Vp3bP2pFjRKG8Ml7Te85+FqQMLHNXHgMojL0scL70gy9OBdDKVy0rUDnQVXzghKY DkeOk8yPZak= =ivGq -----END PGP SIGNATURE-----