{"id":23309,"date":"2024-09-26T10:30:00","date_gmt":"2024-09-26T08:30:00","guid":{"rendered":"https:\/\/www.defencetech.it\/?p=23309"},"modified":"2025-06-10T10:03:29","modified_gmt":"2025-06-10T08:03:29","slug":"vulnerability-analysis-report-cve-2024-39425-a-file-system-toctou-lpe-case-study","status":"publish","type":"post","link":"https:\/\/tinextadefence.it\/en\/vulnerability-analysis-report-cve-2024-39425-a-file-system-toctou-lpe-case-study\/","title":{"rendered":"Vulnerability Analysis Report - CVE-2024-39425: A File System TOCTOU LPE case study"},"content":{"rendered":"<p>In corporate environments, users generally do not have administrative rights to install or update software, making maintenance a challenge for the IT department.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>To solve this problem, suppliers implement automatic update mechanisms that allow them to perform <strong>updates without user intervention<\/strong>.\u00a0\u00a0<\/p>\r\n\r\n\r\n\r\n<p>However, these mechanisms need to raise their privileges to function, which makes them a target of interest for both security researchers and <strong>attackers<\/strong>.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>In our laboratory, we discovered a vulnerability in the automatic update mechanism of <strong>Adobe Reader<\/strong>identified as <strong>CVE-2024-39425<\/strong>.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>This flaw allows a local attacker to gain SYSTEM privileges, bypassing User Account Control (UAC) and restrictions on non-administrator users. Although the exploit requires pre-existing access to the target machine and several complex steps, if successfully exploited it allows full control of the system to be taken.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>We have reported this vulnerability to Adobe, which has released a corrective patch. We recommend that all users update their software to the latest available version to avoid possible attacks.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>If you wish to learn more, here is the link to our <strong><a href=\"https:\/\/tinextadefence.it\/wp-content\/uploads\/2025\/03\/Report-Adobe-ARM-LPE.pdf\">full report<\/a><\/strong>.\u00a0<\/p>\r\n\r\n\r\n\r\n<p><span data-contrast=\"none\">In addition, you can subscribe to the specific mailing list <b>Cyber Studios by Tinexta Defence<\/b>, to receive updates on upcoming research: <\/span><a href=\"https:\/\/tinextadefence.it\/en\/cyber-studios-mailing-list\/\"><span data-contrast=\"none\">https:\/\/tinextadefence.it\/mailing-list-cyber-studios\/<\/span><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>In corporate environments, users generally do not have administrative rights to install or update software, making maintenance a challenge for the IT department.  To solve this problem, vendors implement automatic update mechanisms that allow updates to be performed without user intervention.   However, these mechanisms must elevate their privileges to function, which [...]<\/p>","protected":false},"author":2,"featured_media":26257,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[102],"tags":[110],"class_list":["post-23309","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tinextadefencebusiness","tag-articoli"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vulnerability Analysis Report - CVE-2024-39425: A File System TOCTOU LPE case study - Tinexta Defence<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tinextadefence.it\/en\/vulnerability-analysis-report-cve-2024-39425-a-file-system-toctou-lpe-case-study\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vulnerability Analysis Report - CVE-2024-39425: A File System TOCTOU LPE case study - Tinexta Defence\" \/>\n<meta property=\"og:description\" content=\"In ambienti aziendali, gli utenti non hanno generalmente diritti amministrativi per installare o aggiornare software, rendendo la manutenzione una sfida per il reparto IT.\u00a0 Per risolvere questo problema, i fornitori implementano meccanismi di aggiornamento automatico che permettono di eseguire aggiornamenti senza l&#8217;intervento dell&#8217;utente.\u00a0\u00a0 Tuttavia, questi meccanismi devono elevare i loro privilegi per funzionare, il che [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tinextadefence.it\/en\/vulnerability-analysis-report-cve-2024-39425-a-file-system-toctou-lpe-case-study\/\" \/>\n<meta property=\"og:site_name\" content=\"Tinexta Defence\" \/>\n<meta property=\"article:published_time\" content=\"2024-09-26T08:30:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-10T08:03:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/tinextadefence.it\/wp-content\/uploads\/2025\/03\/Tinexta_Defence_evidenza_articolo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"640\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Simone Sorte\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Simone Sorte\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/tinextadefence.it\/vulnerability-analysis-report-cve-2024-39425-a-file-system-toctou-lpe-case-study\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/tinextadefence.it\/vulnerability-analysis-report-cve-2024-39425-a-file-system-toctou-lpe-case-study\/\"},\"author\":{\"name\":\"Simone Sorte\",\"@id\":\"https:\/\/tinextadefence.it\/#\/schema\/person\/1f5092d13bbba815b7d8508dc4a0a941\"},\"headline\":\"Vulnerability Analysis Report &#8211; 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