What is RHSA-2021:4451?

RHSA-2021:4451 is a security advisory published by Red Hat Product Security with Medium severity. Red Hat Security Advisory: gnutls and nettle security, bug fix, and enhancement update

Which CVE IDs does RHSA-2021:4451 cover?

RHSA-2021:4451 covers the following CVE IDs: CVE-2021-3580, CVE-2021-20231, CVE-2021-20232. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2021:4451?

RHSA-2021:4451 has a CVSS v3 base score of 7.5, published by Red Hat Product Security.

RHSA-2021:4451MediumCVSS 7.5

Red Hat Security Advisory: gnutls and nettle security, bug fix, and enhancement update

Vendor

Red Hat Product Security

Published

November 9, 2021

Last Modified

June 25, 2026

🔗 CVE IDs covered (3)

CVE-2021-3580 →CVE-2021-20231 →CVE-2021-20232 →

📋 Description

CVE-2021-3580 — nettle: Remote crash in RSA decryption via manipulated ciphertext CVE-2021-20231 — gnutls: Use after free in client key_share extension CVE-2021-20232 — gnutls: Use after free in client_send_params in lib/ext/pre_shared_key.c

🔗 References (11)

selfhttps://access.redhat.com/errata/RHSA-2021:4451
externalhttps://access.redhat.com/security/updates/classification/#moderate
externalhttps://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1776250
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1908110
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1908334
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1922275
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1922276
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1965445
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1967983
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4451.json