PT-2021-24274 · Ckb · Ckb

Published 2021-07-25 · Updated 2022-07-12 · CVE-2021-45700

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: ckb crate versions prior to 0.40.0

Description: The issue allows attackers to cause a denial of service, specifically a Nervos CKB blockchain node crash, by utilizing a dead call as a DepGroup. It is possible to create a malign transaction that uses the dead cell as the DepGroup in the DepCells, which can then crash all the receiving nodes.

Recommendations: For versions prior to 0.40.0, update to version 0.40.0 or later to resolve the issue. As a temporary workaround, consider restricting the use of dead cells as DepGroups in transactions to minimize the risk of node crashes.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2021-45700

GHSA-45P7-C959-RGCM

GHSA-CW98-CX2M-9QQG

RUSTSEC-2021-0109

Affected Products

Ckb

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2021-45700 · Security Note
• https://osv.dev/vulnerability/GHSA-cw98-cx2m-9qqg · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-45p7-c959-rgcm · Vendor Advisory
• https://osv.dev/vulnerability/RUSTSEC-2021-0109 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-45700 · Vendor Advisory
• https://github.com/nervosnetwork/ckb · Note
• https://github.com/nervosnetwork/ckb/security/advisories/GHSA-45p7-c959-rgcm · Note
• https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0109.md · Note
• https://rustsec.org/advisories/RUSTSEC-2021-0109.html · Note
• https://crates.io/crates/ckb · Note