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MitreCVE-2021-45699

HistoryDec 27, 2021 - 12:15 a.m.

CVE-2021-45699

2021-12-2700:15:09

CWE-770

mitre

web.nvd.nist.gov

cve-2021-45699

ckb crate

rust

51% attack

nervos ckb blockchain

memory allocation

vulnerability

security advisory

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.3

Confidence

High

EPSS

0.002

Percentile

59.2%

JSON

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.

Affected configurations

Nvd

Node

nervosckbRange<0.40.0rust

VendorProductVersionCPE
nervosckb*cpe:2.3:a:nervos:ckb:*:*:*:*:*:rust:*:*

Vendor	Product	Version	CPE
nervos	ckb	*	cpe:2.3:a:nervos:ckb::::::rust::*

References

raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0108.md

rustsec.org/advisories/RUSTSEC-2021-0108.html

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.3

Confidence

High

EPSS

0.002

Percentile

59.2%

JSON

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