SCA: security update for fastecdsa (GHSA-56wv-2wr9-3h9r)

high Tenable Cloud Security Plugin ID 410639

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- An issue was discovered in fastecdsa before 2.1.2. When using the NIST P-256 curve in the ECDSA
implementation, the point at infinity is mishandled. This means that for an extreme value in k and s^-1,
the signature verification fails even if the signature is correct. This behavior is not solely a usability
problem. There are some threat models where an attacker can benefit by successfully guessing users for
whom signature verification will fail. (CVE-2020-12607)

See Also

https://github.com/advisories/GHSA-56wv-2wr9-3h9r

Plugin Details

Severity: High

ID: 410639

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2020-12607

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 8.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/12/2021

Vulnerability Publication Date: 6/2/2020

Reference Information

CVE: CVE-2020-12607

cwe: CWE-347