cpe:2.3:a:stunnel:stunnel:4.04:*:*:*:*:*:*:*
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.
Max CVSS
7.5
EPSS Score
0.12%
Published
2021-02-23
Updated
2022-06-01
Unspecified vulnerability in stunnel before 4.23, when running as a service on Windows, allows local users to gain privileges via unknown attack vectors.
Max CVSS
7.2
EPSS Score
0.04%
Published
2008-05-22
Updated
2017-08-08
The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), which allows remote attackers to bypass intended access restrictions by using revoked certificates.
Max CVSS
6.8
EPSS Score
1.49%
Published
2008-05-23
Updated
2017-08-08
stunnel 4.21 through 4.54, when CONNECT protocol negotiation and NTLM authentication are enabled, does not correctly perform integer conversion, which allows remote proxy servers to execute arbitrary code via a crafted request that triggers a buffer overflow.
Max CVSS
6.6
EPSS Score
1.11%
Published
2013-03-08
Updated
2014-01-17
4 vulnerabilities found
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