WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated users in a default configuration. This occurs because CSRF protection is mishandled, and because Search Engine Optimization of A elements is performed incorrectly, leading to XSS. The XSS results in administrative access, which allows arbitrary changes to .php files. This is related to wp-admin/includes/ajax-actions.php and wp-includes/comment.php.
{
"binaries": [
{
"binary_version": "4.4.2+dfsg-1ubuntu1",
"binary_name": "wordpress"
},
{
"binary_version": "4.4.2+dfsg-1ubuntu1",
"binary_name": "wordpress-l10n"
},
{
"binary_version": "4.4.2+dfsg-1ubuntu1",
"binary_name": "wordpress-theme-twentyfifteen"
},
{
"binary_version": "4.4.2+dfsg-1ubuntu1",
"binary_name": "wordpress-theme-twentyfourteen"
},
{
"binary_version": "4.4.2+dfsg-1ubuntu1",
"binary_name": "wordpress-theme-twentysixteen"
}
]
}
{
"binaries": [
{
"binary_version": "4.9.5+dfsg1-1",
"binary_name": "wordpress"
},
{
"binary_version": "4.9.5+dfsg1-1",
"binary_name": "wordpress-l10n"
},
{
"binary_version": "4.9.5+dfsg1-1",
"binary_name": "wordpress-theme-twentyfifteen"
},
{
"binary_version": "4.9.5+dfsg1-1",
"binary_name": "wordpress-theme-twentyseventeen"
},
{
"binary_version": "4.9.5+dfsg1-1",
"binary_name": "wordpress-theme-twentysixteen"
}
]
}