nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, an untrusted peer could crash a validator by publishing a signed tendermint proposal message where signer == validators.num_validators(). ProposalSender::send uses > instead of >= for the signer bounds check, so the equality case passes and reaches validators.get_validator_by_slot_band(signer), which panics with an out-of-bounds index before any signature verification runs. 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
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/nimiq/core-rs-albatross/commit/9199364b60c7acae4219800d194bb…
security-advisories@github.com
https://github.com/nimiq/core-rs-albatross/pull/3661
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-g99c-h7j7-r…
security-advisories@github.com