{"id":44322,"date":"2025-05-25T18:38:07","date_gmt":"2025-05-25T18:38:07","guid":{"rendered":""},"modified":"2025-10-22T19:05:42","modified_gmt":"2025-10-23T01:05:42","slug":"cve-2023-42870-use-after-free-vulnerability-in-macos-ios-and-ipados-allows-arbitrary-code-execution-with-kernel-privileges","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-42870-use-after-free-vulnerability-in-macos-ios-and-ipados-allows-arbitrary-code-execution-with-kernel-privileges\/","title":{"rendered":"<strong>CVE-2023-42870: Use-After-Free Vulnerability in macOS, iOS, and iPadOS Allows Arbitrary Code Execution with Kernel Privileges<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In this blog post, we aim to provide an in-depth analysis of the newly identified vulnerability CVE-2023-42870. This security flaw has been identified in macOS Sonoma 14, iOS 17, and iPadOS 17. This vulnerability is a use-after-free issue that could potentially lead to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32363-critical-vulnerability-in-medidok-allowing-remote-code-execution\/\"  data-wpil-monitor-id=\"49818\">execution of arbitrary<\/a> code with kernel privileges. It is an issue of high relevance considering it affects several major operating systems and has the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4648-integrity-check-vulnerability-in-centreon-web-leading-to-potential-xss-injection\/\"  data-wpil-monitor-id=\"49870\">potential to compromise system security or lead<\/a> to data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-42870<br \/>\nSeverity: High (CVSS Score: 7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24022-critical-server-code-execution-vulnerability-in-itop-it-service-management-tool\/\"  data-wpil-monitor-id=\"49829\">Execution of arbitrary code<\/a> with kernel privileges, potentially leading to system compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3489986517\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-42826-arbitrary-code-execution-vulnerability-in-macos-sonoma-14\/\"  data-wpil-monitor-id=\"51595\">macOS | Sonoma<\/a> 14<br \/>\niOS | 17<br \/>\niPadOS | 17<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-42933-a-critical-elevation-of-privilege-vulnerability-in-macos-sonoma-14\/\"  data-wpil-monitor-id=\"51623\">vulnerability exploits a use-after-free issue in macOS<\/a>, iOS, and iPadOS. The flaw is in the memory <a href=\"https:\/\/www.ameeba.com\/blog\/tivit-becomes-a-key-player-in-cybersecurity-with-latin-america-s-largest-detection-and-management-operations-center\/\"  data-wpil-monitor-id=\"51596\">management of the operating<\/a> systems, where an object in memory is used after it has been freed. This can lead to undefined behavior, including program crashes, incorrect results, and the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30377-code-execution-vulnerability-in-microsoft-office-via-use-after-free\/\"  data-wpil-monitor-id=\"49922\">execution of arbitrary code<\/a>. In this case, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43561-incorrect-authorization-vulnerability-in-coldfusion-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"50045\">arbitrary code<\/a> could be executed with kernel privileges, which means it has the potential to take control of the affected system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1515581672\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>To illustrate how the exploit might work, consider an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1277-memory-corruption-vulnerability-in-autodesk-applications-through-malicious-pdf-files\/\"  data-wpil-monitor-id=\"64393\">application that uses a certain object in memory<\/a>. The operating system frees this object, but the application continues to use it, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-0562-use-after-free-flaw-in-linux-kernel-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"53670\">leading to the use-after-free<\/a> issue. The following pseudocode provides a conceptual example:<\/p>\n<pre><code class=\"\" data-line=\"\">struct object *obj = allocate_object();\nuse_object(obj);\nfree_object(obj);\n\/\/ Use after free vulnerability\nuse_object(obj);<\/code><\/pre>\n<p>In the above pseudocode, the `use_object(obj);` call after `free_object(obj);` is where the use-after-free issue occurs. An attacker could exploit this issue to insert malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3053-remote-code-execution-vulnerability-in-uipress-lite-wordpress-plugin\/\"  data-wpil-monitor-id=\"50122\">code that the system executes<\/a> with kernel privileges.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Users are strongly advised to apply the vendor patch as soon as possible. For those who cannot immediately apply the patch, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may serve as a temporary mitigation strategy. However, these should not be seen as long-term solutions, as they may not fully <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3319-an-authentication-bypass-vulnerability-in-ibm-spectrum-protect-server\/\"  data-wpil-monitor-id=\"64392\">protect against the vulnerability<\/a>. The only reliable method to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7093-critical-vulnerability-in-belkin-f9k1122-1-00-33-impacting-system-security-and-data-integrity\/\"  data-wpil-monitor-id=\"91182\">secure your system<\/a> from CVE-2023-42870 is to apply the patch provided by the vendor.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In this blog post, we aim to provide an in-depth analysis of the newly identified vulnerability CVE-2023-42870. This security flaw has been identified in macOS Sonoma 14, iOS 17, and iPadOS 17. This vulnerability is a use-after-free issue that could potentially lead to the execution of arbitrary code with kernel privileges. It is an [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[77,88],"product":[95],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-44322","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apple","vendor-linux","product-linux-kernel","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/44322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=44322"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/44322\/revisions"}],"predecessor-version":[{"id":84201,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/44322\/revisions\/84201"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=44322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=44322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=44322"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=44322"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=44322"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=44322"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=44322"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=44322"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=44322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}