{"id":76120,"date":"2025-09-24T18:08:51","date_gmt":"2025-09-24T18:08:51","guid":{"rendered":""},"modified":"2025-10-14T11:36:35","modified_gmt":"2025-10-14T17:36:35","slug":"cve-2023-49564-authentication-bypass-vulnerability-in-cbis-ncs-manager-api","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-49564-authentication-bypass-vulnerability-in-cbis-ncs-manager-api\/","title":{"rendered":"<strong>CVE-2023-49564: Authentication Bypass Vulnerability in CBIS\/NCS Manager API<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In this blog post, we delve into the details of a critical security vulnerability, CVE-2023-49564, that affects the CBIS\/NCS Manager API. This flaw exposes the application to potential unauthorized access, system compromise, and data leakage. The vulnerability is particularly concerning as it lies within a crucial component of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8309-improper-privilege-management-vulnerability-in-manageengine-products\/\"  data-wpil-monitor-id=\"85067\">CBIS\/NCS Manager<\/a> &#8211; the Nginx Podman container, which is responsible for API management. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9791-critical-vulnerability-in-tenda-ac20-16-03-08-05-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"84976\">potential for system<\/a> compromise and the high CVSS score of 8.8 underline the urgency of addressing this threat promptly.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-49564<br \/>\nSeverity: High (8.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7051-unauthorized-access-and-manipulation-of-syslog-configuration-in-n-central\/\"  data-wpil-monitor-id=\"84569\">Unauthorized access<\/a> to API functions, potential system compromise, and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2681191356\" 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>CBIS\/NCS Manager API | All versions prior to patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The CVE-2023-49564 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55454-authenticated-arbitrary-file-upload-vulnerability-in-dootask-v1-0-51\/\"  data-wpil-monitor-id=\"84442\">vulnerability<\/a> arises due to a weak verification mechanism in the authentication implementation of the Nginx Podman container on the CBIS\/NCS Manager host machine. This flaw allows an unauthenticated user to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-50641-authentication-bypass-vulnerability-in-pandoranext-tokenstool\/\"  data-wpil-monitor-id=\"84800\">bypass the authentication<\/a> process by sending a specially crafted HTTP header. As a result, the attacker can gain unauthorized access to restricted or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55190-argo-cd-api-tokens-expose-sensitive-repository-credentials\/\"  data-wpil-monitor-id=\"87007\">sensitive endpoints of the HTTP API<\/a> without providing valid credentials.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2162300918\" 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>The following is a conceptual example of an HTTP <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8592-wordpress-inspiro-theme-vulnerability-to-cross-site-request-forgery-csrf\/\"  data-wpil-monitor-id=\"85408\">request that exploits the vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">GET \/restricted\/endpoint HTTP\/1.1\nHost: target.example.com\nX-Auth-Bypass: true<\/code><\/pre>\n<p>In this example, the attacker sends a GET request to a restricted endpoint with a specially crafted `X-Auth-Bypass` header set to `true`. The weak verification mechanism present in the API fails to validate this header properly, allowing the attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5060-authentication-bypass-vulnerability-in-bravis-user-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"85227\">bypass the authentication<\/a> process and access restricted or sensitive endpoints.<\/p>\n<p><strong>Recommendations for Mitigation<\/strong><\/p>\n<p>The recommended mitigation for this vulnerability is to apply the vendor patch as soon as it becomes available. In the interim, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to partially mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-59033-critical-vulnerability-in-microsoft-s-driver-block-list\/\"  data-wpil-monitor-id=\"88615\">vulnerability by blocking<\/a> or alerting on suspicious activity. Additionally, restricting access to the management <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-37124-unauthenticated-remote-firewall-bypass-on-hpe-aruba-networking-sd-wan-gateways\/\"  data-wpil-monitor-id=\"89774\">network using an external firewall<\/a> can also help reduce the risk of exploitation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In this blog post, we delve into the details of a critical security vulnerability, CVE-2023-49564, that affects the CBIS\/NCS Manager API. This flaw exposes the application to potential unauthorized access, system compromise, and data leakage. The vulnerability is particularly concerning as it lies within a crucial component of the CBIS\/NCS Manager &#8211; the Nginx [&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":[],"product":[],"attack_vector":[75],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-76120","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-authentication-bypass"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/76120","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=76120"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/76120\/revisions"}],"predecessor-version":[{"id":82646,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/76120\/revisions\/82646"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=76120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=76120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=76120"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=76120"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=76120"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=76120"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=76120"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=76120"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=76120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}