nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. In versions 1.2.2 and below, an unauthenticated p2p peer can cause the RequestMacroChain message handler task to panic. Sending a RequestMacroChain message where the first locator hash on the victim’s main chain is a micro block hash (not a macro block hash) causes said panic.
The RequestMacroChain::handle handler selects the locator based only on "is on main chain", then calls get_macro_blocks() and panics via .unwrap() when the selected hash is not a macro block (BlockchainError::BlockIsNotMacro). This issue has been fixed in version 1.3.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/nimiq/core-rs-albatross/commit/ae6c1e92342e72f80fd12accbe66e…
security-advisories@github.com
https://github.com/nimiq/core-rs-albatross/pull/3660
security-advisories@github.com
https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0
security-advisories@github.com
https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-48m6-486p-9…
security-advisories@github.com