openSUSE Leap 15.2: 2021:0220-1 Moderate: OpenSSL Vulnerability Patch

This update for stunnel fixes the following issues:

Security issue fixed:

- The "redirect" option was fixed to properly handle "verifyChain = yes"

(bsc#1177580).

Non-security issues fixed:

- Fix startup problem of the stunnel daemon (bsc#1178533)

- update to 5.57:

* Security bugfixes

* New features

- New securityLevel configuration file option.

- Support for modern PostgreSQL clients

- TLS 1.3 configuration updated for better compatibility.

* Bugfixes

- Fixed a transfer() loop bug.

- Fixed memory leaks on configuration reloading errors.

- DH/ECDH initialization restored for client sections.

- Delay startup with systemd until network is online.

- A number of testing framework fixes and improvements.

- update to 5.56:

- Various text files converted to Markdown format.

- Support for realpath(3) implementations incompatible with

POSIX.1-2008, such as 4.4BSD or Solaris.

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