An insufficient logging and monitoring vulnerability exists in Magento 1 prior to 1.9.4.3 and 1.14.4.3, Magento 2.1 prior to 2.1.19, Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3. The logging feature required for effective monitoring did not contain sufficent data to effectively track configuration changes.
As per the Magento Release 2.3.3, if you have already implemented the pre-release version of this patch (2.3.2-p1), it is highly recommended to promptly upgrade to 2.3.2-p2.
github.com/FriendsOfPHP/security-advisories/blob/master/magento/magento1ce/CVE-2019-8123.yaml
github.com/FriendsOfPHP/security-advisories/blob/master/magento/magento1ee/CVE-2019-8123.yaml
github.com/FriendsOfPHP/security-advisories/blob/master/magento/product-community-edition/CVE-2019-8123.yaml
github.com/magento/magento2
magento.com/security/patches/magento-2.3.3-and-2.2.10-security-update
nvd.nist.gov/vuln/detail/CVE-2019-8123
web.archive.org/web/20211209030216/https://magento.com/security/patches/supee-11219