Fedora 34: 2021-e6557245e8 Critical HAProxy Security Fix

HAProxy is a TCP/HTTP reverse proxy which is particularly suited for high

availability environments. Indeed, it can:

- route HTTP requests depending on statically assigned cookies

- spread load among several servers while assuring server persistence

through the use of HTTP cookies

- switch to backup servers in the event a main one fails

- accept connections to special ports dedicated to service monitoring

- stop accepting connections without breaking existing ones

- add, modify, and delete HTTP headers in both directions

- block requests matching particular patterns

- report detailed status to authenticated users from a URI

intercepted from the application

Security fix for CVE-2021-39240, CVE-2021-39241, CVE-2021-39242

* Wed Aug 18 2021 Ryan O'Hara - 2.3.13-1

- Update to 2.3.13

- Fix domain parts in :scheme and :path fields (CVE-2021-39240, #1995105)

- Fix spaces in the :method field (CVE-2021-39241, #1995109)

- Fix mismatch between :authority and Host fields (CVE-2021-39242, #1995113)

[ 1 ] Bug #1995105 - CVE-2021-39240 haproxy: does not ensure that the scheme and path portions of a URI have the expected characters [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=1995105

[ 2 ] Bug #1995109 - CVE-2021-39241 haproxy: an HTTP method name may contain a space followed by the name of a protected resource [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=1995109

[ 3 ] Bug #1995113 - CVE-2021-39242 haproxy: it can lead to a situation with an attacker-controlled HTTP Host header because a mismatch between Host and authority is mishandled [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=1995113

su -c 'dnf upgrade --advisory FEDORA-2021-e6557245e8' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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