{"id":86330,"date":"2026-01-20T06:57:23","date_gmt":"2026-01-20T06:57:23","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T06:00:00","slug":"cve-2025-47270-denial-of-service-vulnerability-in-nimiq-core-rs-albatross","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-47270-denial-of-service-vulnerability-in-nimiq-core-rs-albatross\/","title":{"rendered":"<strong>CVE-2025-47270: Denial of Service Vulnerability in nimiq\/core-rs-albatross<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The nimiq\/core-rs-albatross, a Rust implementation of the Nimiq Proof-of-Stake protocol, is under risk of a Denial of Service (DoS) attack due to a vulnerability in the `nimiq-network-libp2p` subcrate. This vulnerability threatens any system using this protocol and can lead to potential system compromise or data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-47270<br \/>\nSeverity: High (CVSS:7.5)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: Potential system compromise and data leakage due to memory exhaustion and node crashes<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1215856364\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p>nimiq\/core-rs-albatross | Versions prior to v1.1.0<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability lies in the `Discovery` network message handling within the `nimiq-network-libp2p` subcrate. This implementation allocates a buffer based on a length value provided by the peer, without an upper limit. The length is a `u32`, thus a malicious peer can trigger allocations of up to 4 GB, potentially leading to memory exhaustion and node crashes.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1983472780\" 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>Given the nature of this vulnerability, it would be exploited over the network rather than via a specific code. However, in concept, a malicious peer could send an exaggeratedly large `Discovery` message leading to memory exhaustion. The process might be conceptually similar to this:<\/p>\n<pre><code class=\"\" data-line=\"\">let large_message = vec![0; 4_000_000_000];  \/\/ 4 GB message\nlet discovery_message = DiscoveryMessage::new(large_message);\npeer.send(discovery_message);  \/\/ Send the message to the target peer<\/code><\/pre>\n<p>Please note that this is a simplified, conceptual example and the actual process of exploitation might be more complex and require deeper knowledge of the Nimiq network protocol and the Rust programming language.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>The vendor has released a patch as version v1.1.0. It implements a limit to the discovery message size of 1 MB and also resizes the message buffer size incrementally as the data is read. Systems using nimiq\/core-rs-albatross should upgrade to this version as soon as possible.<br \/>\nIn the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may provide temporary mitigation, but these are not substitutes for applying the vendor&#8217;s patch. No other known workarounds are available.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The nimiq\/core-rs-albatross, a Rust implementation of the Nimiq Proof-of-Stake protocol, is under risk of a Denial of Service (DoS) attack due to a vulnerability in the `nimiq-network-libp2p` subcrate. This vulnerability threatens any system using this protocol and can lead to potential system compromise or data leakage. Vulnerability Summary CVE ID: CVE-2025-47270 Severity: High (CVSS:7.5) [&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":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86330","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/86330","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=86330"}],"version-history":[{"count":0,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/86330\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=86330"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=86330"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=86330"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=86330"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=86330"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=86330"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=86330"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=86330"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=86330"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}