3912780b1e
The clienthello callback was written when TLSv1.3 was not yet out, and signatures algorithm changed since then. With TLSv1.2, the least significant byte was used to determine the SignatureAlgorithm, which could be rsa(1), dsa(2), ecdsa(3). https://datatracker.ietf.org/doc/html/rfc5246#section-7.4.1.4.1 This was used to chose which type of certificate to push to the client. But TLSv1.3 changed that, and introduced new RSA-PSS algorithms that does not have the least sinificant byte to 1. https://datatracker.ietf.org/doc/html/rfc8446#section-4.2.3 This would result in chosing the wrong certificate when an RSA an ECDSA ones are in the configuration for the same SNI or default entry. This patch fixes the issue by parsing bothe hash and signature field to check the RSA-PSS signature scheme. This must fix issue #2852. This must be backported in every stable versions. The code was moved from ssl_sock.c to ssl_clienthello in recent versions.
HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
Please refer to the following files depending on what you're looking for:
- INSTALL for instructions on how to build and install HAProxy
- BRANCHES to understand the project's life cycle and what version to use
- LICENSE for the project's license
- CONTRIBUTING for the process to follow to submit contributions
The more detailed documentation is located into the doc/ directory:
- doc/intro.txt for a quick introduction on HAProxy
- doc/configuration.txt for the configuration's reference manual
- doc/lua.txt for the Lua's reference manual
- doc/SPOE.txt for how to use the SPOE engine
- doc/network-namespaces.txt for how to use network namespaces under Linux
- doc/management.txt for the management guide
- doc/regression-testing.txt for how to use the regression testing suite
- doc/peers.txt for the peers protocol reference
- doc/coding-style.txt for how to adopt HAProxy's coding style
- doc/internals for developer-specific documentation (not all up to date)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.