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Date: Thu, 12 Jan 2017 13:10:41 +0100
From: Florian Weimer <fweimer@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: invalid free in GNU ed before 1.14.1
On 01/12/2017 12:14 PM, Hanno Böck wrote:
> Hi,
>
> ed 1.14.1 fixes an invalid free, reported here:
> https://lists.gnu.org/archive/html/bug-ed/2017-01/msg00000.html
>
> Reproducer:
> echo -e "H\n?\{" | ed
>
> Found with afl. ed 1.14.1 didn't show any more issues with afl/asan
> fuzzing.
>
> Not sure if there's any scenario where ed is used with untrusted input.
There is red/ed -r. I wouldn't rely on it for security isolation, but
the functionality does exist.
(Debian's APT uses ed scripts for package list diffs, but it doesn't use
ed to apply them.)
Thanks,
Florian
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