[USN-6901-1] stunnel vulnerability
Bruce Cable
bruce.cable at canonical.com
Thu Jul 18 09:28:59 UTC 2024
==========================================================================
Ubuntu Security Notice USN-6901-1
July 18, 2024
stunnel vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
stunnel could allow unintended access to network services.
Software Description:
- stunnel4: Universal SSL tunnel for network daemons
Details:
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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
stunnel4 3:5.56-1ubuntu0.2
Ubuntu 18.04 LTS
stunnel4 3:5.44-1ubuntu3+esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6901-1
CVE-2021-20230
Package Information:
https://launchpad.net/ubuntu/+source/stunnel4/3:5.56-1ubuntu0.2
-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_signature.asc
Type: application/pgp-signature
Size: 665 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20240718/dbb3b1ed/attachment.sig>
More information about the ubuntu-security-announce
mailing list