{"id":35365,"date":"2018-12-16T03:00:31","date_gmt":"2018-12-15T20:00:31","guid":{"rendered":"http:\/\/deepquest.code511.com\/blog\/2018\/12\/gnu-inetutils-1-9-4-telnet-c-overflows\/"},"modified":"2018-12-16T03:00:31","modified_gmt":"2018-12-15T20:00:31","slug":"gnu-inetutils-1-9-4-telnet-c-overflows","status":"publish","type":"post","link":"https:\/\/deepquest.code511.com\/blog\/2018\/12\/gnu-inetutils-1-9-4-telnet-c-overflows\/","title":{"rendered":"GNU inetutils 1.9.4 telnet.c Overflows"},"content":{"rendered":"<p>GNU inetutils versions 1.9.4 and below are vulnerable to a stack overflow vulnerability in the client-side environment variable handling which can be exploited to escape restricted shells on embedded devices. Most modern browsers no longer support telnet:\/\/ handlers, but in instances where URI handlers are enabled to the inetutils telnet client this issue maybe remotely triggerable. A stack-based overflow is present in the handling of environment variables when connecting telnet.c to remote telnet servers through oversized DISPLAY arguments. A heap-overflow is also present which can be triggered in a different code path due to supplying oversized environment variables during client connection code.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GNU inetutils versions 1.9.4 and below are vulnerable to a stack overflow vulnerability in the client-side environment variable handling which can be exploited to escape restricted shells on embedded devices&#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-35365","post","type-post","status-publish","format-standard","hentry","category-exploit"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p4bBYZ-9cp","_links":{"self":[{"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/posts\/35365","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=35365"}],"version-history":[{"count":0,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/posts\/35365\/revisions"}],"wp:attachment":[{"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/media?parent=35365"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/categories?post=35365"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/deepquest.code511.com\/blog\/wp-json\/wp\/v2\/tags?post=35365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}