{"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":"-0001-11-30T00:00:00","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":"CVE-2025-47270: Denial of Service Vulnerability in nimiq\/core-rs-albatross<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

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

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-47270
\nSeverity: High (CVSS:7.5)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise and data leakage due to memory exhaustion and node crashes<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

nimiq\/core-rs-albatross | Versions prior to v1.1.0<\/p>\n

How the Exploit Works<\/strong><\/p>\n

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

Conceptual Example Code<\/strong><\/p>\n

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

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
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
Mitigation Guidance<\/strong><\/p>\n
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.
\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’s patch. No other known workarounds are available.<\/p>\n","protected":false},"excerpt":{"rendered":"
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) […]<\/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":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86330","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t