CVE-2021-20230

State
Published
Severity
Not scored
Published
Feb 23, 2021
Updated
Aug 3, 2024
Reserved
Dec 17, 2020

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

Affected Products

ProductVersions
stunneln/a
  • stunnel 5.57Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.