{"id":68996,"date":"2025-08-28T20:31:29","date_gmt":"2025-08-28T17:01:29","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-57767-asterisk-sip-authorization-header-null-pointer-dereference-vulnerability\/"},"modified":"2025-08-28T20:31:29","modified_gmt":"2025-08-28T17:01:29","slug":"cve-2025-57767-asterisk-sip-authorization-header-null-pointer-dereference-vulnerability","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-57767-asterisk-sip-authorization-header-null-pointer-dereference-vulnerability\/","title":{"rendered":"CVE-2025-57767 &#8211; Asterisk SIP Authorization Header Null Pointer Dereference Vulnerability"},"content":{"rendered":"<p><strong>CVE ID : <\/strong>CVE-2025-57767<br \/>\n<br \/>\n<strong>Published : <\/strong> Aug. 28, 2025, 4:15 p.m. | 29\u00a0minutes ago<br \/>\n<br \/>\n<strong>Description : <\/strong>Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, and 22.5.2, if a SIP request is received with an Authorization header that contains a realm that wasn&#8217;t in a previous 401 response&#8217;s WWW-Authenticate header, or an Authorization header with an incorrect realm was received without a previous 401 response being sent, the get_authorization_header() function in res_pjsip_authenticator_digest will return a NULL. This wasn&#8217;t being checked before attempting to get the digest algorithm from the header which causes a SEGV. This issue has been patched in versions 20.15.2, 21.10.2, and 22.5.2. There are no workarounds.<br \/>\n<br \/>\n<strong>Severity:<\/strong> 7.5 | HIGH<br \/>\n<br \/>\nVisit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2025-57767 Published : Aug. 28, 2025, 4:15 p.m. | 29\u00a0minutes ago Description : Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, and 22.5.2, if a SIP request is received with an Authorization header that contains a realm that wasn&#8217;t in a previous 401 response&#8217;s &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-68996","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/68996","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=68996"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/68996\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=68996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=68996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=68996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}