{"id":44655,"date":"2021-12-17T23:59:29","date_gmt":"2021-12-17T14:59:29","guid":{"rendered":"https:\/\/jirak.net\/wp\/usn-5200-1-python-vulnerabilities\/"},"modified":"2021-12-18T01:34:06","modified_gmt":"2021-12-17T16:34:06","slug":"usn-5200-1-python-vulnerabilities","status":"publish","type":"post","link":"https:\/\/jirak.net\/wp\/usn-5200-1-python-vulnerabilities\/","title":{"rendered":"USN-5200-1: Python vulnerabilities"},"content":{"rendered":"<p>USN-5200-1: Python vulnerabilities<\/p>\n<p>It was discovered that the urllib.request.AbstractBasicAuthHandler class<br \/>\nin Python contains regex allowing for catastrophic backtracking. Specially<br \/>\ncrafted traffic from a malicious HTTP server could cause a regular expression<br \/>\ndenial of service (ReDoS) condition for a client.<br \/>\n(CVE-2020-8492)<\/p>\n<p>It was discovered that the urllib.request.AbstractBasicAuthHandler class<br \/>\nin Python contains regex with a quadratic worst-case time complexity.<br \/>\nSpecially crafted traffic from a malicious HTTP server could cause a regular<br \/>\nexpression denial of service (ReDoS) condition for a client.<br \/>\n(CVE-2021-3733)<\/p>\n<p>It was discovered that the Python urllib http client could enter into an infinite<br \/>\nloop when incorrectly handling certain server responses (100 Continue response).<br \/>\nSpecially crafted traffic from a malicious HTTP server could cause a denial of<br \/>\nservice (DoS) condition for a client.<br \/>\n(CVE-2021-3737)<br \/>\nSource: <a href=\"https:\/\/ubuntu.com\/security\/notices\/USN-5200-1\" target=\"_blank\" rel=\"noopener\">USN-5200-1: Python vulnerabilities<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>USN-5200-1: Python vulnerabilities It was discovered that the urllib.request.AbstractBasicAuthHandler class in Python contains regex allowing for catastrophic backtracking. Specially crafted traffic from a malicious HTTP server could cause a regular expression denial of service (ReDoS) condition for a client. (CVE-2020-8492) It was discovered that the urllib.request.AbstractBasicAuthHandler class in Python contains regex with a quadratic worst-case time complexity. Specially crafted traffic from a malicious HTTP server could cause a regular expression denial of service (ReDoS) condition for a client. (CVE-2021-3733) It was discovered that the Python urllib http client could enter into an infinite loop when incorrectly handling certain server responses (100 Continue response). Specially crafted traffic from a malicious HTTP server could cause a denial of service (DoS) condition for a client. (CVE-2021-3737) Source: USN-5200-1: Python vulnerabilities<\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[586],"tags":[587],"class_list":["post-44655","post","type-post","status-publish","format-standard","hentry","category-ubuntu-usn","tag-ubuntu-usn"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/44655","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/comments?post=44655"}],"version-history":[{"count":1,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/44655\/revisions"}],"predecessor-version":[{"id":44656,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/44655\/revisions\/44656"}],"wp:attachment":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/media?parent=44655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/categories?post=44655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/tags?post=44655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}