{"id":39668,"date":"2020-01-15T00:38:18","date_gmt":"2020-01-14T17:38:18","guid":{"rendered":"https:\/\/deepquest.code511.com\/blog\/2020\/01\/wordpress-5-3-denial-of-service\/"},"modified":"2020-01-15T00:38:18","modified_gmt":"2020-01-14T17:38:18","slug":"wordpress-5-3-denial-of-service","status":"publish","type":"post","link":"https:\/\/deepquest.code511.com\/blog\/2020\/01\/wordpress-5-3-denial-of-service\/","title":{"rendered":"WordPress 5.3 Denial Of Service"},"content":{"rendered":"<p>WordPress is vulnerable to denial of service by abusing XMLRPC API. The system.multicall function lets you batch other API calls. Another API function is pingback.ping, which makes WordPress make a connection out to another site. If you batch a few thousand pingback.ping requests using the multicall feature, you can exhaust a variety of different resources on the server. This PoC will eat through Apache2&#8217;s worker threads and will also make MySQL eat up more CPU and mem, possibly knocking over low-RAM VPS instances.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>WordPress is vulnerable to denial of service by abusing XMLRPC API. The system.multicall function lets you batch other API calls. Another API function is pingback.ping, which makes WordPress make a&#8230;<\/p>\n","protected":false},"author":439,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-39668","post","type-post","status-publish","format-standard","hentry","category-exploit"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p4bBYZ-ajO","_links":{"self":[{"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/posts\/39668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/users\/439"}],"replies":[{"embeddable":true,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/comments?post=39668"}],"version-history":[{"count":0,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/posts\/39668\/revisions"}],"wp:attachment":[{"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/media?parent=39668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/categories?post=39668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/tags?post=39668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}