VulnerabilityModified
CVE-2021-45699
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.
HIGH 7.5EPSS 1.47%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.47% probability · 72th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- nervos/ckb
- Source
- cve@mitre.org
References
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0108.mdThird Party Advisory
- https://rustsec.org/advisories/RUSTSEC-2021-0108.htmlThird Party Advisory
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0108.mdThird Party Advisory
- https://rustsec.org/advisories/RUSTSEC-2021-0108.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.