vulnerability

FreeBSD: VID-c365536d-e3cf-11eb-9d8d-b37b683944c2 (CVE-2021-34558): go -- crypto/tls: clients can panic when provided a certificate of the wrong type for the negotiated parameters

Severity
3
CVSS
(AV:N/AC:H/Au:N/C:N/I:N/A:P)
Published
Jul 12, 2021
Added
Nov 4, 2022
Modified
Dec 10, 2025

Description

The Go project reports: crypto/tls clients can panic when provided a certificate of the wrong type for the negotiated parameters. net/http clients performing HTTPS requests are also affected. The panic can be triggered by an attacker in a privileged network position without access to the server certificate's private key, as long as a trusted ECDSA or Ed25519 certificate for the server exists (or can be issued), or the client is configured with Config.InsecureSkipVerify. Clients that disable all TLS_RSA cipher suites (that is, TLS 1.0–1.2 cipher suites without ECDHE), as well as TLS 1.3-only clients, are unaffected.

Solution

freebsd-upgrade-package-go
Title
NEW

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