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.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=1925226 | Issue Tracking Third Party Advisory |
https://github.com/mtrojnar/stunnel/commit/ebad9ddc4efb2635f37174c9d800d06206f1edf9 | Patch Third Party Advisory |
https://security.gentoo.org/glsa/202105-02 | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2021-02-23T16:34:39
Updated: 2021-05-26T09:06:16
Reserved: 2020-12-17T00:00:00
Link: CVE-2021-20230
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-02-23T17:15:13.753
Modified: 2022-06-01T18:05:45.337
Link: CVE-2021-20230
JSON object: View
Redhat Information
No data.
CWE