Hash: SHA256

             AUSCERT External Security Bulletin Redistribution

             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: 

- --------------------------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

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

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:


Australian Computer Emergency Response Team
The University of Queensland
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.
Comment: http://www.auscert.org.au/render.html?it=1967