CVE-2021-21405 Information

Description

Lotus is an Implementation of the Filecoin protocol written in Go. BLS signature validation in lotus uses blst library method VerifyCompressed. This method accepts signatures in 2 forms: \serialized\ and ## CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://github.com/filecoin-project/lotus/pull/5393 https://gist.github.com/wadeAlexC/2490d522e81a796af9efcad1686e6754 https://github.com/filecoin-project/lotus/security/advisories/GHSA-4g52-pqcj-phvh

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5