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CVE-2021-45699

Date: December 26, 2021

An issue was discovered in the ckb crate before 0.40.0 for Rust. Remote attackers may be able to conduct a 51% attack against the Nervos CKB blockchain by triggering an inability to allocate memory for the misbehavior HashMap.

Severity Score

Related Resources (7)

https://rustsec.org/advisories/RUSTSEC-2021-0108.html
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0108.md
https://github.com/nervosnetwork/ckb
https://nvd.nist.gov/vuln/detail/CVE-2021-45699
https://github.com/nervosnetwork/ckb/security/advisories/GHSA-48vq-8jqv-gm6f
https://crates.io/crates/ckb
https://www.mend.io/vulnerability-database/CVE-2021-45699

Severity Score

Weakness Type (CWE)

Allocation of Resources Without Limits or Throttling

CWE-770

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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