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             AUSCERT External Security Bulletin Redistribution

Drupal core - Moderately critical - Cross Site Scripting - SA-CORE-2020-002
                                21 May 2020


        AusCERT Security Bulletin Summary

Product:           Drupal Core
Publisher:         Drupal
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-11023 CVE-2020-11022 

Original Bulletin: 

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Drupal core - Moderately critical - Cross Site Scripting - SA-CORE-2020-002

Project:       Drupal core

Date:          2020-May-20

Security risk: Moderately critical 10â\x{136}\x{149}25

Vulnerability: Cross Site ScriptingDescription:

The jQuery project released version 3.5.0, and as part of that, disclosed two
security vulnerabilities that affect all prior versions. As mentioned in the
jQuery blog , both are

    [...] security issues in jQuery's DOM manipulation methods, as in .html() ,
    .append() , and the others. Security advisories for both of these issues
    have been published on GitHub.

Those advisories are:

  o CVE-2020-11022
  o CVE-2020-11023

These vulnerabilities may be exploitable on some Drupal sites. This Drupal
security release backports the fixes to the relevant jQuery functions, without
making any other changes to the jQuery version that is included in Drupal core
or running on the site via some other module such as jQuery Update . It is not
necessary to update jquery_update on Drupal 7 sites that have the module

Backwards-compatibility code has also been added to minimize regressions to
Drupal sites that might rely on jQuery's prior behavior. With jQuery 3.5,
incorrect self-closing HTML tags in JavaScript for elements where end tags are
normally required will encounter a change in what jQuery returns or inserts .
To minimize that disruption in 8.8.x and earlier, this security release retains
jQuery's prior behavior for most safe tags. There may still be regressions for
edge cases, including invalidly self-closed custom elements on Internet

(Note: the backwards compatibility layer will not be included in the upcoming
Drupal 8.9 and 9.0 releases, so Drupal 8 and 9 modules, themes, and sites
should correct tags in JavaScript to properly use closing tags.)

If you find a regression caused by the jQuery changes, please report it in
Drupal core's issue queue (or that of the relevant contrib project). However,
if you believe you have found a security issue, please report it privately to
the Drupal Security Team .


Install the latest version:

  o If you are using Drupal 8.8, upgrade to Drupal 8.8.6 .
  o If you are using Drupal 8.7, upgrade to Drupal 8.7.14 .
  o If you are using Drupal 7, upgrade to Drupal 7.70 .

Versions of Drupal 8 prior to 8.7 are end-of-life and do not receive security
coverage. Sites on 8.6 or earlier should update to 8.7.14.

The pre-release Drupal versions (8.9 and 9.0) have been updated jQuery to
version 3.5.1 as of 8.9.0-beta3 and 9.0.0-beta3.

Reported By:

  o Drew Webber of the Drupal Security Team
  o Emerson Jair Reis Oliveira da Silva

Fixed By:

  o Drew Webber of the Drupal Security Team
  o Sally Young
  o cilefen of the Drupal Security Team
  o Jess of the Drupal Security Team
  o Emerson Jair Reis Oliveira da Silva
  o Lee Rowlands of the Drupal Security Team
  o Alex Bronstein of the Drupal Security Team
  o Ben Mullins
  o Lauri Eskola
  o Peter Weber
  o Samuel Mortenson of the Drupal Security Team

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