{"id":28583,"date":"2017-05-10T10:05:06","date_gmt":"2017-05-10T03:05:06","guid":{"rendered":"http:\/\/deepquest.code511.com\/blog\/2017\/05\/lg-liblg_parser_mkv-so-bad-allocation-calls\/"},"modified":"2017-05-10T10:05:06","modified_gmt":"2017-05-10T03:05:06","slug":"lg-liblg_parser_mkv-so-bad-allocation-calls","status":"publish","type":"post","link":"https:\/\/deepquest.code511.com\/blog\/2017\/05\/lg-liblg_parser_mkv-so-bad-allocation-calls\/","title":{"rendered":"LG liblg_parser_mkv.so Bad Allocation Calls"},"content":{"rendered":"<p>During EBML node parsing the EBML element_size is used unvalidated to allocate a stack buffer to store the element contents. Since calls to alloca simply compile to a subtraction from the current stack pointer, for large sizes this can result in memory corruption and potential remote-code-execution in the mediaserver process. Tested on an LG-G4 with firmware MRA58K.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>During EBML node parsing the EBML element_size is used unvalidated to allocate a stack buffer to store the element contents. Since calls to alloca simply compile to a subtraction from&#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-28583","post","type-post","status-publish","format-standard","hentry","category-exploit"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p4bBYZ-7r1","_links":{"self":[{"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/posts\/28583","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=28583"}],"version-history":[{"count":0,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/posts\/28583\/revisions"}],"wp:attachment":[{"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/media?parent=28583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/categories?post=28583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/tags?post=28583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}