From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.bugs Subject: bug#66390: `man' allows to inject arbitrary shell code Date: Mon, 09 Oct 2023 19:20:03 +0200 Message-ID: <87sf6ju30c.fsf@igel.home> References: <83wmvyzir2.fsf@gnu.org> <585dcaf0-358e-4a9d-84d1-6fd9c2c8aec5@gmail.com> <83v8bizf9r.fsf@gnu.org> <1865abb8-16cd-4570-9a8a-87cf9430583d@gmail.com> <875y3iigua.fsf@gmx.de> <83o7hazap7.fsf@gnu.org> <87mswugyoq.fsf@gmx.de> <83jzryz6op.fsf@gnu.org> <87a5sugwcx.fsf@gmx.de> <83h6n2z3tr.fsf@gnu.org> <831qe5znrz.fsf@gnu.org> <834jizwxm2.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="1889"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: lux , manikulin@gmail.com, 66390@debbugs.gnu.org, michael.albinus@gmx.de To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Oct 09 19:20:54 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qptw3-0000FV-T3 for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 09 Oct 2023 19:20:51 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qptvz-0000WL-5B; Mon, 09 Oct 2023 13:20:47 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qptvu-0000Uv-GS for bug-gnu-emacs@gnu.org; Mon, 09 Oct 2023 13:20:42 -0400 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qptvu-0002MG-6Z for bug-gnu-emacs@gnu.org; Mon, 09 Oct 2023 13:20:42 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qptwE-0005Zr-HR for bug-gnu-emacs@gnu.org; Mon, 09 Oct 2023 13:21:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andreas Schwab Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 09 Oct 2023 17:21:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 66390 X-GNU-PR-Package: emacs Original-Received: via spool by 66390-submit@debbugs.gnu.org id=B66390.169687203521378 (code B ref 66390); Mon, 09 Oct 2023 17:21:02 +0000 Original-Received: (at 66390) by debbugs.gnu.org; 9 Oct 2023 17:20:35 +0000 Original-Received: from localhost ([127.0.0.1]:33045 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qptvm-0005Yk-KG for submit@debbugs.gnu.org; Mon, 09 Oct 2023 13:20:34 -0400 Original-Received: from mail-out.m-online.net ([2001:a60:0:28:0:1:25:1]:39004) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qptvh-0005YR-Eh for 66390@debbugs.gnu.org; Mon, 09 Oct 2023 13:20:33 -0400 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4S45Pw6Rhyz1sBpn; Mon, 9 Oct 2023 19:20:04 +0200 (CEST) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.6.68]) by mail.m-online.net (Postfix) with ESMTP id 4S45Pw4kY8z1qqlb; Mon, 9 Oct 2023 19:20:04 +0200 (CEST) X-Virus-Scanned: amavis at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.68]) (amavis, port 10024) with ESMTP id Fi5tXqFH-cXX; Mon, 9 Oct 2023 19:20:03 +0200 (CEST) X-Auth-Info: qPwoZ5uIUG6GzCIvPRp/GXmAjTuXn6VJK4UERQ3BQctdKUXb2IB1B6JCPYHkwg/H Original-Received: from igel.home (aftr-62-216-205-170.dynamic.mnet-online.de [62.216.205.170]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Mon, 9 Oct 2023 19:20:03 +0200 (CEST) Original-Received: by igel.home (Postfix, from userid 1000) id 9C2872C01A1; Mon, 9 Oct 2023 19:20:03 +0200 (CEST) In-Reply-To: <834jizwxm2.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 09 Oct 2023 19:48:21 +0300") X-Yow: This ASIAGO-N-DRIED TOMATO combo would taste a lot better between two plastic SIPPER LIDS! X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:272157 Archived-At: On Okt 09 2023, Eli Zaretskii wrote: >> From: lux >> Cc: 66390@debbugs.gnu.org, michael.albinus@gmx.de >> Date: Tue, 10 Oct 2023 00:30:06 +0800 >> >> There is indeed an code injection vulnerability issue here, for example: >> >> (man ";ls") <-- The `ls' command will be executed. > > So does this: > > (shell-command "ls") shell-command does what it is supposed to do. man, on the other hand, is supposed to display a manpage, _not_ execute an arbitrary command line. While the doc string of the man command says that it runs a command to do its work, it does not explain how man-args is related to that command. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."