From: Jeff King <peff@peff.net>
To: Erik Faye-Lund <kusmabite@gmail.com>
Cc: "Johannes Sixt" <j6t@kdbg.org>, "Duy Nguyen" <pclouds@gmail.com>,
"Antoine Pelisse" <apelisse@gmail.com>,
"Torsten Bögershausen" <tboegi@web.de>,
"Git Mailing List" <git@vger.kernel.org>,
"Wataru Noguchi" <wnoguchi.0727@gmail.com>,
"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
"René Scharfe" <l.s.r@web.de>, msysGit <msysgit@googlegroups.com>
Subject: Re: [PATCH] Prevent buffer overflows when path is too big
Date: Mon, 21 Oct 2013 15:14:39 -0400 [thread overview]
Message-ID: <20131021191439.GB29681@sigill.intra.peff.net> (raw)
In-Reply-To: <CABPQNSZku9RtwKe2r=zpGrNcHRDD_Ct7C+=x8UcNhJeJDn-oqQ@mail.gmail.com>
On Mon, Oct 21, 2013 at 09:07:26PM +0200, Erik Faye-Lund wrote:
> I would argue that this is probably even a bug on Linux, only harder
> (if not impossible) to trigger by accident as there's probably no
> git-client that will generate such trees. But a "malicious" client
> might.
I've just been poking through the impacts of these overflows, for that
exact reason. I don't think any of them are easily triggerable by
somebody sending you a malicious tree (e.g., the `remove_subtree` one
only triggers when we have seen that tree in the filesystem, so it must
be limited to `PATH_MAX`). Some of them are triggerable if you use
particular options (e.g., the one in `match_order` is easy to trigger if
you use `diff -O`).
Still, they should all be fixed, even for Linux. I shouldn't have to
trace the provenance of the data back through 10 functions just to find
out a buffer overflow isn't easily exploitable. :)
-Peff
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next prev parent reply other threads:[~2013-10-21 19:14 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-28 21:17 [PATCH] mingw-multibyte: fix memory acces violation and path length limits Wataru Noguchi
2013-09-28 23:18 ` Johannes Schindelin
2013-09-29 2:56 ` Wataru Noguchi
2013-09-29 11:01 ` [msysGit] " Stefan Beller
2013-10-01 13:37 ` Wataru Noguchi
2013-09-30 17:00 ` René Scharfe
2013-09-30 21:02 ` Erik Faye-Lund
2013-10-01 13:35 ` Wataru Noguchi
2013-10-02 22:26 ` Wataru Noguchi
2013-10-03 17:25 ` Antoine Pelisse
2013-10-03 17:36 ` Erik Faye-Lund
2013-10-05 11:39 ` Wataru Noguchi
2013-10-19 10:52 ` [PATCH] Prevent buffer overflows when path is too big Antoine Pelisse
2013-10-20 5:47 ` Torsten Bögershausen
2013-10-20 6:05 ` [msysGit] " Ondřej Bílka
2013-10-20 6:27 ` Torsten Bögershausen
2013-10-20 7:39 ` [msysGit] " Ondřej Bílka
2013-10-20 10:33 ` Duy Nguyen
2013-10-20 17:57 ` Antoine Pelisse
2013-10-21 1:31 ` Duy Nguyen
2013-10-21 19:02 ` Johannes Sixt
2013-10-21 19:07 ` Erik Faye-Lund
2013-10-21 19:14 ` Jeff King [this message]
2013-10-21 19:32 ` Jeff King
2013-10-23 12:55 ` [PATCH 1/2] entry.c: convert checkout_entry to use strbuf Nguyễn Thái Ngọc Duy
2013-10-23 12:55 ` [PATCH 2/2] entry.c: convert write_entry " Nguyễn Thái Ngọc Duy
2013-10-23 17:52 ` Junio C Hamano
2013-10-24 1:23 ` Duy Nguyen
2013-10-24 19:49 ` Junio C Hamano
2013-10-24 23:47 ` Duy Nguyen
2013-10-23 12:58 ` [PATCH 1/2] entry.c: convert checkout_entry " Antoine Pelisse
2013-10-23 13:04 ` Duy Nguyen
2013-10-23 13:06 ` Antoine Pelisse
2013-10-23 17:29 ` Jeff King
2013-10-23 17:34 ` Erik Faye-Lund
2013-10-23 17:52 ` Jeff King
2013-10-23 18:09 ` Junio C Hamano
2013-10-23 18:10 ` Jeff King
2013-10-24 1:55 ` [PATCH v2] " Nguyễn Thái Ngọc Duy
2013-10-23 12:55 ` [PATCH] Prevent buffer overflows when path is too big Duy Nguyen
2013-11-26 18:39 ` [PATCH] Prevent buffer overflows when path is too long Antoine Pelisse
2013-11-26 19:50 ` Junio C Hamano
2013-11-29 12:12 ` Antoine Pelisse
2013-12-14 11:31 ` Antoine Pelisse
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