Vulnerability · Published May 12, 2025 · Assigned by GitHub_M
CVE-2025-47270nimiq-network-libp2p Uncontrolled Resource Consumption vulnerability
High 7.5
In plain English
A high-severity uncontrolled resource consumption in core-rs-albatross from nimiq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).
Official description
nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. The `nimiq-network-libp2p` subcrate of nimiq/core-rs-albatross is vulnerable to a Denial of Service (DoS) attack due to uncontrolled memory allocation. Specifically, the implementation of the `Discovery` network message handling allocates a buffer based on a length value provided by the peer, without enforcing an upper bound. Since this length is a `u32`, a peer can trigger allocations of up to 4 GB, potentially leading to memory exhaustion and node crashes. As Discovery messages are regularly exchanged for peer discovery, this vulnerability can be exploited repeatedly. The patch for this vulnerability is formally released as part of v1.1.0. The patch implements a limit to the discovery message size of 1 MB and also resizes the message buffer size incrementally as the data is read. No known workarounds are available.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nimiq | core-rs-albatross | < 1.1.0 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-3v6r-9cr8-q433 x_refsource_CONFIRM
- https://github.com/nimiq/core-rs-albatross/pull/3384 x_refsource_MISC
- https://github.com/nimiq/core-rs-albatross/commit/566935f0dd0fb41bba1f406d8e3a02dc499520b5 x_refsource_MISC
- https://github.com/nimiq/core-rs-albatross/releases/tag/v1.1.0 x_refsource_MISC