A wordpress security update has been released for Debian GNU/Linux 9 LTS to address several vulnerabilities.

DLA 2429-1: wordpress security update

- -----------------------------------------------------------------------
Debian LTS Advisory DLA-2429-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
November 03, 2020   https://wiki.debian.org/LTS
- -----------------------------------------------------------------------

Package : wordpress
Version : 4.7.19+dfsg-1+deb9u1
CVE ID : CVE-2020-28032 CVE-2020-28033 CVE-2020-28034
CVE-2020-28035 CVE-2020-28036 CVE-2020-28037
CVE-2020-28038 CVE-2020-28039 CVE-2020-28040
Debian Bug : 973562

There were several vulnerabilites reported against wordpress,
as follows:

CVE-2020-28032

WordPress before 4.7.19 mishandles deserialization requests in
wp-includes/Requests/Utility/FilteredIterator.php.

CVE-2020-28033

WordPress before 4.7.19 mishandles embeds from disabled sites
on a multisite network, as demonstrated by allowing a spam
embed.

CVE-2020-28034

WordPress before 4.7.19 allows XSS associated with global
variables.

CVE-2020-28035

WordPress before 4.7.19 allows attackers to gain privileges via
XML-RPC.

CVE-2020-28036

wp-includes/class-wp-xmlrpc-server.php in WordPress before
4.7.19 allows attackers to gain privileges by using XML-RPC to
comment on a post.

CVE-2020-28037

is_blog_installed in wp-includes/functions.php in WordPress
before 4.7.19 improperly determines whether WordPress is
already installed, which might allow an attacker to perform
a new installation, leading to remote code execution (as well
as a denial of service for the old installation).

CVE-2020-28038

WordPress before 4.7.19 allows stored XSS via post slugs.

CVE-2020-28039

is_protected_meta in wp-includes/meta.php in WordPress before
4.7.19 allows arbitrary file deletion because it does not
properly determine whether a meta key is considered protected.

CVE-2020-28040

WordPress before 4.7.19 allows CSRF attacks that change a
theme's background image.

For Debian 9 stretch, these problems have been fixed in version
4.7.19+dfsg-1+deb9u1.

We recommend that you upgrade your wordpress packages.

For the detailed security status of wordpress please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/wordpress

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS