[Announce] Git v2.26.2 and others

[Junio C Hamano]

Today, the Git project is releasing the following Git versions:

    v2.26.2, v2.25.4, v2.24.3, v2.23.3, v2.22.4, v2.21.3, v2.20.4,
    v2.19.5, v2.18.4, and v2.17.5.

These releases address the security issue CVE-2020-11008, which is
similar to the recently addressed CVE-2020-5260.

Users of the affected maintenance tracks are urged to upgrade.

The tarballs are found at:

    https://www.kernel.org/pub/software/scm/git/

The following public repositories all have a copy of the 'v2.26.2'
and other tags:

  url = https://kernel.googlesource.com/pub/scm/git/git
  url = git://repo.or.cz/alt-git.git
  url = https://github.com/gitster/git

Attached below is the release notes for 2.17.5; all the newer
maintenance tracks listed at the beginning of this message are
updated with the same fix, so I won't repeat them here.

Thanks.

--------------------------------------------------
Git v2.17.5 Release Notes
=========================

This release is to address a security issue: CVE-2020-11008

Fixes since v2.17.4
-------------------

 * With a crafted URL that contains a newline or empty host, or lacks
   a scheme, the credential helper machinery can be fooled into
   providing credential information that is not appropriate for the
   protocol in use and host being contacted.

   Unlike the vulnerability CVE-2020-5260 fixed in v2.17.4, the
   credentials are not for a host of the attacker's choosing; instead,
   they are for some unspecified host (based on how the configured
   credential helper handles an absent "host" parameter).

   The attack has been made impossible by refusing to work with
   under-specified credential patterns.

Credit for finding the vulnerability goes to Carlo Arenas.