CVE-2021-45699 describes a denial-of-service vulnerability in the Nervos CKB blockchain, specifically affecting the ckb crate before version 0.40.0. Remote attackers could exploit this by causing memory allocation failures for the misbehavior HashMap, potentially leading to a 51% attack against the blockchain. Rated High severity (CVSS 7.5), this vulnerability is network-exploitable with low attack complexity, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.40.0CPE matchmatch criteria | cpe:2.3:a:nervos:ckb:*:*:*:*:*:rust:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.