{"id":16187,"date":"2025-04-02T16:48:54","date_gmt":"2025-04-02T16:48:54","guid":{"rendered":""},"modified":"2025-04-18T06:01:07","modified_gmt":"2025-04-18T06:01:07","slug":"cve-2023-22527-critical-remote-code-execution-vulnerability-in-atlassian-confluence-server-and-data-center","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-22527-critical-remote-code-execution-vulnerability-in-atlassian-confluence-server-and-data-center\/","title":{"rendered":"\u200bCVE-2023-22527: Critical Remote Code Execution Vulnerability in Atlassian Confluence Server and Data Center\u200b"},"content":{"rendered":"<p class=\"\" data-start=\"210\" data-end=\"235\"><strong data-start=\"210\" data-end=\"235\">Vulnerability Summary<\/strong><\/p>\n<ul data-start=\"237\" data-end=\"455\">\n<li class=\"\" data-start=\"237\" data-end=\"267\">\n<p class=\"\" data-start=\"239\" data-end=\"267\"><strong data-start=\"239\" data-end=\"250\">CVE ID:<\/strong> CVE-2023-22527<\/p>\n<\/li>\n<li class=\"\" data-start=\"268\" data-end=\"317\">\n<p class=\"\" data-start=\"270\" data-end=\"317\"><strong data-start=\"270\" data-end=\"283\">Severity:<\/strong> Critical (CVSS 3.1 Score: 10.0)<\/p>\n<\/li>\n<li class=\"\" data-start=\"318\" data-end=\"348\">\n<p class=\"\" data-start=\"320\" data-end=\"348\"><strong data-start=\"320\" data-end=\"338\">Attack Vector:<\/strong> Network<\/p>\n<\/li>\n<li class=\"\" data-start=\"349\" data-end=\"382\">\n<p class=\"\" data-start=\"351\" data-end=\"382\"><strong data-start=\"351\" data-end=\"375\">Privileges Required:<\/strong> None<\/p>\n<\/li>\n<li class=\"\" data-start=\"383\" data-end=\"413\">\n<p class=\"\" data-start=\"385\" data-end=\"413\"><strong data-start=\"385\" data-end=\"406\">User Interaction:<\/strong> None<\/p>\n<\/li>\n<li class=\"\" data-start=\"414\" data-end=\"455\">\n<p class=\"\" data-start=\"416\" data-end=\"455\"><strong data-start=\"416\" data-end=\"427\">Impact:<\/strong> <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-29048-remote-code-execution-via-oxmf-template-injection-in-open-xchange-app-suite\/\"  data-wpil-monitor-id=\"24540\">Remote Code Execution<\/a> (RCE)<\/p>\n<\/li>\n<\/ul>\n<p class=\"\" data-start=\"457\" data-end=\"941\">CVE-2023-22527 is a critical vulnerability in Atlassian Confluence <a class=\"wpil_keyword_link\" href=\"https:\/\/chat.ameeba.com\"   title=\"Data\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"24356\">Data<\/a> Center and Server, allowing unauthenticated attackers to execute arbitrary code on affected instances. The flaw arises from an Object-Graph Navigation Language (OGNL) injection <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-42866-critical-memory-corruption-vulnerability-in-apples-webkit-engine\/\"  data-wpil-monitor-id=\"26167\">vulnerability in the Velocity template engine<\/a>, specifically within the <code data-start=\"777\" data-end=\"793\">text-inline.vm<\/code> file. This vulnerability enables attackers to inject malicious OGNL expressions, leading to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22937-critical-remote-code-execution-vulnerability\/\"  data-wpil-monitor-id=\"24861\">remote code execution<\/a> without requiring authentication.<\/p>\n<p class=\"\" data-start=\"943\" data-end=\"964\"><strong data-start=\"943\" data-end=\"964\">Affected Products<\/strong><\/p>\n<p class=\"\" data-start=\"966\" data-end=\"1039\">The following versions of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-21673-high-impact-remote-code-execution-vulnerability-in-confluence-data-center-and-server\/\"  data-wpil-monitor-id=\"28863\">Confluence Data Center<\/a> and Server are affected:<\/p>\n<ul data-start=\"1041\" data-end=\"1114\">\n<li class=\"\" data-start=\"1041\" data-end=\"1050\">\n<p class=\"\" data-start=\"1043\" data-end=\"1050\">8.0.x<\/p>\n<\/li>\n<li class=\"\" data-start=\"1051\" data-end=\"1060\">\n<p class=\"\" data-start=\"1053\" data-end=\"1060\">8.1.x<\/p>\n<\/li>\n<li class=\"\" data-start=\"1061\" data-end=\"1070\">\n<p class=\"\" data-start=\"1063\" data-end=\"1070\">8.2.x<\/p>\n<\/li>\n<li class=\"\" data-start=\"1071\" data-end=\"1080\">\n<p class=\"\" data-start=\"1073\" data-end=\"1080\">8.3.x<\/p>\n<\/li>\n<li class=\"\" data-start=\"1081\" data-end=\"1090\">\n<p class=\"\" data-start=\"1083\" data-end=\"1090\">8.4.x<\/p>\n<\/li>\n<li class=\"\" data-start=\"1091\" data-end=\"1114\">\n<p class=\"\" data-start=\"1093\" data-end=\"1114\">8.5.0 through 8.5.3<\/p>\n<\/li>\n<\/ul>\n<p class=\"\" data-start=\"1116\" data-end=\"1184\"><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-22526-critical-remote-code-execution-rce-vulnerability-in-confluence-data-center\/\"  data-wpil-monitor-id=\"28895\">Confluence LTS version 7.19.x is not affected by this vulnerability<\/a>.<\/p>\n<p class=\"\" data-start=\"1186\" data-end=\"1211\"><strong data-start=\"1186\" data-end=\"1211\">How the Exploit Works<\/strong><\/p>\n<p class=\"\" data-start=\"1213\" data-end=\"1587\">The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-47992-critical-buffer-overflow-vulnerability-exploit-in-freeimage-library\/\"  data-wpil-monitor-id=\"25582\">vulnerability has been actively exploited<\/a> in the wild. Attackers have leveraged it to deploy cryptomining <a class=\"wpil_keyword_link\" href=\"https:\/\/www.ameeba.com\"   title=\"malware\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"24357\">malware<\/a>, such as XMRig, by executing malicious scripts that download and run mining software on compromised servers. These scripts often disable security services, establish persistence through cron jobs, and attempt lateral movement by harvesting SSH credentials.<\/p>\n<p class=\"\" data-start=\"1589\" data-end=\"1806\">A proof-of-concept (PoC) exploit demonstrates how an attacker can send a crafted HTTP POST <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-6532-cross-site-request-forgery-vulnerability-in-wp-blogs-planetarium-wordpress-plugin-vulnerability-summary\/\"  data-wpil-monitor-id=\"25042\">request to the vulnerable<\/a> <code data-start=\"1706\" data-end=\"1722\">text-inline.vm<\/code> endpoint, injecting OGNL expressions that execute arbitrary commands on the server.<\/p>\n<p class=\"\" data-start=\"1808\" data-end=\"1838\"><strong data-start=\"1808\" data-end=\"1838\">Mitigation Recommendations<\/strong><\/p>\n<ul data-start=\"1840\" data-end=\"2500\">\n<li class=\"\" data-start=\"1840\" data-end=\"2012\">\n<p class=\"\" data-start=\"1842\" data-end=\"2012\"><strong data-start=\"1842\" data-end=\"1865\">Immediate Patching:<\/strong> Upgrade <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-21672-unpatched-confluence-data-center-and-server-prone-to-high-risk-remote-code-execution\/\"  data-wpil-monitor-id=\"28888\">Confluence Data Center and Server<\/a> to the latest versions. Atlassian has released fixes in versions 8.5.4 (LTS), 8.6.0, 8.7.1, and later.<\/p>\n<\/li>\n<li class=\"\" data-start=\"2013\" data-end=\"2205\">\n<p class=\"\" data-start=\"2015\" data-end=\"2205\"><strong data-start=\"2015\" data-end=\"2048\">Isolate Vulnerable Instances:<\/strong> If immediate patching isn&#8217;t possible, restrict access to affected <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2945-unveiling-the-system-access-vulnerability-in-network-security-protocols\/\"  data-wpil-monitor-id=\"28683\">Confluence<\/a> instances by removing them from public networks and limiting internal access.<\/p>\n<\/li>\n<li class=\"\" data-start=\"2206\" data-end=\"2375\">\n<p class=\"\" data-start=\"2208\" data-end=\"2375\"><strong data-start=\"2208\" data-end=\"2256\">Monitor for Indicators of Compromise (IOCs):<\/strong> Check for unusual processes, unauthorized cron jobs, and unexpected <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-52073-critical-buffer-overflow-exploit-in-network-security-systems\/\"  data-wpil-monitor-id=\"25331\">network activity that may indicate exploitation<\/a>.<\/p>\n<\/li>\n<li class=\"\" data-start=\"2376\" data-end=\"2500\">\n<p class=\"\" data-start=\"2378\" data-end=\"2500\"><strong data-start=\"2378\" data-end=\"2419\">Review Atlassian&#8217;s <\/strong><a href=\"https:\/\/www.ameeba.com\/blog\/nsa-issues-guidance-on-fast-flux-a-rising-national-security-threat\/\"  data-wpil-monitor-id=\"29660\">Security Advisory: For detailed guidance<\/a>, refer to Atlassian&#8217;s official advisory on CVE-2023-22527.<\/p>\n<\/li>\n<\/ul>\n<p class=\"\" data-start=\"2502\" data-end=\"2516\"><strong data-start=\"2502\" data-end=\"2516\">Conclusion<\/strong><\/p>\n<p class=\"\" data-start=\"2518\" data-end=\"2842\">CVE-2023-22527 poses a severe risk to organizations using <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-6528-buffer-overflow-vulnerability-in-abc-data-handler\/\"  data-wpil-monitor-id=\"24511\">vulnerable versions of Atlassian Confluence Data<\/a> Center and Server. Given the ease of exploitation and the potential for significant impact, it&#8217;s imperative to apply the recommended patches promptly and implement <a href=\"https:\/\/www.ameeba.com\/blog\/cisa-s-addition-of-ivanti-connect-secure-flaw-to-kev-catalog-a-deep-look-into-cybersecurity-implications\/\"  data-wpil-monitor-id=\"30031\">additional security<\/a> measures to protect your systems.<\/p>\n<p class=\"\" data-start=\"2844\" data-end=\"2858\"><strong data-start=\"2844\" data-end=\"2858\">References<\/strong><\/p>\n<ul data-start=\"2860\" data-end=\"3481\">\n<li class=\"\" data-start=\"2860\" data-end=\"3074\">\n<p class=\"\" data-start=\"2862\" data-end=\"3074\"><a class=\"\" href=\"https:\/\/confluence.atlassian.com\/security\/cve-2023-22527-rce-remote-code-execution-vulnerability-in-confluence-data-center-and-confluence-server-1333990257.html\" target=\"_new\" rel=\"noopener\" data-start=\"2862\" data-end=\"3072\">Atlassian Security Advisory for CVE-2023-22527<\/a><\/p>\n<\/li>\n<li class=\"\" data-start=\"3075\" data-end=\"3158\">\n<p class=\"\" data-start=\"3077\" data-end=\"3158\"><a class=\"\" href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2023-22527\" target=\"_new\" rel=\"noopener\" data-start=\"3077\" data-end=\"3156\">NVD Entry for CVE-2023-22527<\/a><\/p>\n<\/li>\n<li class=\"\" data-start=\"3159\" data-end=\"3282\">\n<p class=\"\" data-start=\"3161\" data-end=\"3282\"><a class=\"\" href=\"https:\/\/www.trendmicro.com\/en_us\/research\/24\/h\/cve-2023-22527-cryptomining.html\" target=\"_new\" rel=\"noopener\" data-start=\"3161\" data-end=\"3280\">Trend Micro Analysis of Exploitation<\/a><\/p>\n<\/li>\n<li class=\"\" data-start=\"3283\" data-end=\"3370\">\n<p class=\"\" data-start=\"3285\" data-end=\"3370\"><a class=\"\" href=\"https:\/\/github.com\/Manh130902\/CVE-2023-22527-POC\" target=\"_new\" rel=\"noopener\" data-start=\"3285\" data-end=\"3368\">GitHub Proof-of-Concept Exploit<\/a><\/p>\n<\/li>\n<li class=\"\" data-start=\"3371\" data-end=\"3481\">\n<p class=\"\" data-start=\"3373\" data-end=\"3481\"><a class=\"\" href=\"https:\/\/confluence.atlassian.com\/display\/KB\/FAQ%2Bfor%2BCVE-2023-22527\" target=\"_new\" rel=\"noopener\" data-start=\"3373\" data-end=\"3479\">Atlassian FAQ for CVE-2023-22527<\/a><\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Vulnerability Summary CVE ID: CVE-2023-22527 Severity: Critical (CVSS 3.1 Score: 10.0) Attack Vector: Network Privileges Required: None User Interaction: None Impact: Remote Code Execution (RCE) CVE-2023-22527 is a critical vulnerability in Atlassian Confluence Data Center and Server, allowing unauthenticated attackers to execute arbitrary code on affected instances. The flaw arises from an Object-Graph Navigation Language [&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,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[79],"product":[],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-16187","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-github","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Vulnerability Summary CVE ID: CVE-2023-22527 Severity: Critical (CVSS 3.1 Score: 10.0) Attack Vector: Network Privileges Required: None User Interaction: None Impact: Remote Code Execution (RCE) CVE-2023-22527 is a critical vulnerability in Atlassian Confluence Data Center and Server, allowing unauthenticated attackers to execute arbitrary code on affected instances. 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