A malicious peer acting as a state-sync source can crash a syncing node by sending a crafted TrieChunk whose proof contains two TrieProofNodes with identical keys. TrieProof::verify() calls TrieProofNode::child_index() (primitives/src/trie/trie_proof_node.rs:94), which unconditionally unwraps KeyNibbles::get(self.key.len()). Because is_prefix_of returns true for two equal keys, execution reaches get(len), which returns None, and the unwrap() panics.
The panic is reached from untrusted network input (ResponseChunk → commit_chunks → put_chunk → proof.verify()) before any cryptographic proof verification, so the attacker does not need to produce a valid proof. Exploitation requires the attacker to be selected as the victim's sync peer while the victim is performing state sync, and the resulting crash is transient (the node restarts and re-syncs).
Affected: core-rs-albatross <= 1.5.1 (nimiq-primitives).
Fixed in 1.6.0 via https://github.com/nimiq/core-rs-albatross/pull/3789 (commit 41d35ace). child_index now rejects equal-length keys and returns MerkleRadixTrieError::WrongPrefix instead of unwrapping.
None other than syncing only from trusted peers. Upgrade to 1.6.0.
| Software | From | Fixed in |
|---|---|---|
nimiq-primitives
|
- | 1.6.0 |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
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Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
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