Golang: stdlib: security update to 1.19.12stdlib: security update to 1.20.7stdlib: security update to 1.21.0-rc.4

medium Tenable Cloud Security Plugin ID 428519

Description

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

- Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time
verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <=
8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in
circulation with keys larger than this, and all three appear to be test certificates that are not actively
deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so
causing breakage here in the interests of increasing the default safety of users of crypto/tls seems
reasonable. (CVE-2023-29409)

See Also

https://pkg.go.dev/vuln/GO-2023-1987

Plugin Details

Severity: Medium

ID: 428519

Version: Revision 1.2

Type: Local

Family: Golang

Published: 7/21/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2023-29409

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/2/2023

Vulnerability Publication Date: 8/2/2023

Reference Information

CVE: CVE-2023-29409