[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <CAHmME9rP34SMoyhxrSMqBPuy+bMn-1kkZijiVGAOMuHf6ztMKQ@mail.gmail.com>
Date: Fri, 15 Jan 2016 16:58:07 +0100
From: "Jason A. Donenfeld" <Jason@...c4.com>
To: oss-security <oss-security@...ts.openwall.com>,
Qualys Security Advisory <qsa@...lys.com>
Subject: Re: Qualys Security Advisory - Roaming through the
OpenSSH client: CVE-2016-0777 and CVE-2016-0778
On Fri, Jan 15, 2016 at 4:56 PM, Jason A. Donenfeld <Jason@...c4.com> wrote:
> Great work Qualys. One question about the PoC:
>
> On Thu, Jan 14, 2016 at 6:13 PM, Qualys Security Advisory
> <qsa@...lys.com> wrote:
>> # env ROAMING="heap_massaging:linux" "`pwd`"/sshd -o ListenAddress=127.0.0.1:222 -o
>> UsePrivilegeSeparation=no -f /etc/ssh/sshd_config -h /etc/ssh/ssh_host_rsa_key
>
> Does your proof of concept patch actually include support for this
> heap_massaging mode?
Read more carefully, answered my own question:
> - Massage the client's heap before roaming_reply() malloc()ates out_buf,
> and force malloc() to return a previously free()d but uncleansed chunk
> of sensitive information. The simple proof-of-concept in this advisory
> does not implement heap massaging.
That's a shame. Please reconsider.
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
