CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2021-20230 – stunnel: client certificate not correctly verified when redirect and verifyChain options are used
https://notcve.org/view.php?id=CVE-2021-20230
22 Feb 2021 — A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configured to use both redirect and verifyChain options. This flaw allows an attacker with a certificate signed by a Certificate Authority, which is not the one accepted by the stunnel server, to access the tunneled service instead of being redirected to the address specified in the redirect option. The highest threat from this vulnerability is to confidentiality. Se encontró un fallo en stunnel versiones a... • https://bugzilla.redhat.com/show_bug.cgi?id=1925226 • CWE-295: Improper Certificate Validation •
CVSS: 10.0EPSS: 0%CPEs: 14EXPL: 0CVE-2015-3644 – Debian Security Advisory 3299-1
https://notcve.org/view.php?id=CVE-2015-3644
14 May 2015 — Stunnel 5.00 through 5.13, when using the redirect option, does not redirect client connections to the expected server after the initial connection, which allows remote attackers to bypass authentication. Stunnel 5.00 hasta 5.13, cuando utiliza la opción de redirección, no redirige las conexiones de clientes al servidor esperado después de la conexión inicial, lo que permite a atacantes remotos evadir la autenticación. Johan Olofsson discovered an authentication bypass vulnerability in Stunnel, a program de... • http://www.debian.org/security/2015/dsa-3299 • CWE-284: Improper Access Control •