Summary
It was discovered that stunnel did not properly validate client
certificates when configured to use both the redirect and verifyChain
options. A remote attacker could potentially use this issue to obtain
sensitive information by accessing the tunneled service.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | stunnel4 | 3:5.56-1ubuntu0.2 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | stunnel4 | 3:5.44-1ubuntu3+esm1 |
Vulnerabilities 1
-
Unscored —
A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configured to use…
References
-
report
https://ubuntu.com/security/CVE-2021-20230