CVE-2022-3786

HIGH7.5EPSS 27.3%

X.509 Email Address Variable Length Buffer Overflow

Published: 11/1/2022Modified: 4/28/2026

Description

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed a malicious certificate or for an application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address in a certificate to overflow an arbitrary number of bytes containing the `.' character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service). In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.

Affected packages (8)

Alpine/nodejsfrom 0, < 18.12.1-r0
Alpine/opensslfrom 0, < 3.0.7-r0
Alpine/openssl3from 0, < 3.0.7-r0
Bitnami/node>= 18.0.0, < 18.11.0, >= 18.12.0, < 18.12.1, >= 19.0.0, < 19.0.1
Bitnami/node-min>= 18.0.0, < 18.11.0, >= 18.12.0, < 18.12.1, >= 19.0.0, < 19.0.1
crates.io/openssl-src>= 300.0.0, < 300.0.11
crates.io/openssl-src>= 300.0.0, < 300.0.11
Debian/opensslfrom 0, < 3.0.7-1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	HIGH7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Affected packages (8)

CVSS scores

References (54)