2022-04-12 20:59:00

by Junio C Hamano

[permalink] [raw]
Subject: [ANNOUNCE] Git v2.35.2 and below for CVE-2022-24765

The latest maintenance release Git v2.35.2, together with releases
for older maintenance tracks v2.30.3, v2.31.2, v2.32.1, v2.33.2, and
v2.34.2, are now available at the usual places.

These maintenance releases are to address the security issues
described in CVE-2022-24765. Please update at your earliest
opportunity.

The tarballs are found at:

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

The following public repositories all have a copy of the 'v2.35.2',
'v2.34.2', 'v2.33.2', 'v2.32.1', 'v2.31.2', and 'v2.30.3' tags.

url = https://git.kernel.org/pub/scm/git/git
url = https://kernel.googlesource.com/pub/scm/git/git
url = https://github.com/gitster/git

CVE-2022-24765:
On multi-user machines, Git users might find themselves
unexpectedly in a Git worktree, e.g. when another user created a
repository in `C:\.git`, in a mounted network drive or in a
scratch space. Merely having a Git-aware prompt that runs `git
status` (or `git diff`) and navigating to a directory which is
supposedly not a Git worktree, or opening such a directory in an
editor or IDE such as VS Code or Atom, will potentially run
commands defined by that other user.

Credit for finding this vulnerability goes to 俞晨东; the fix was
authored by Johannes Schindelin.


2022-04-12 23:04:24

by SZEDER Gábor

[permalink] [raw]
Subject: Re: [ANNOUNCE] Git v2.35.2 and below for CVE-2022-24765

On Tue, Apr 12, 2022 at 10:01:21AM -0700, Junio C Hamano wrote:
> The latest maintenance release Git v2.35.2, together with releases
> for older maintenance tracks v2.30.3, v2.31.2, v2.32.1, v2.33.2, and
> v2.34.2, are now available at the usual places.
>
> These maintenance releases are to address the security issues
> described in CVE-2022-24765. Please update at your earliest
> opportunity.
>
> The tarballs are found at:
>
> https://www.kernel.org/pub/software/scm/git/
>
> The following public repositories all have a copy of the 'v2.35.2',
> 'v2.34.2', 'v2.33.2', 'v2.32.1', 'v2.31.2', and 'v2.30.3' tags.
>
> url = https://git.kernel.org/pub/scm/git/git
> url = https://kernel.googlesource.com/pub/scm/git/git
> url = https://github.com/gitster/git
>
> CVE-2022-24765:
> On multi-user machines, Git users might find themselves
> unexpectedly in a Git worktree, e.g. when another user created a
> repository in `C:\.git`, in a mounted network drive or in a
> scratch space. Merely having a Git-aware prompt that runs `git
> status` (or `git diff`) and navigating to a directory which is
> supposedly not a Git worktree, or opening such a directory in an
> editor or IDE such as VS Code or Atom, will potentially run
> commands defined by that other user.
>
> Credit for finding this vulnerability goes to 俞晨东; the fix was
> authored by Johannes Schindelin.

This fix causes trouble when attempting to 'sudo make install' any
non-tagged Git revision:

$ git checkout v2.36.0-rc2
HEAD is now at 11cfe55261 Git 2.36-rc2
$ git commit --allow-empty -m foo
[detached HEAD 237ee2a6ef] foo
$ make
GIT_VERSION = 2.36.0.rc2.1.g237ee2a6ef
[...]
$ sudo make install
GIT_VERSION = 2.36.0-rc2
CC version.o