exim4: CVE-2021-38371

Debian Bug report logs - #992172
exim4: CVE-2021-38371

Reply or subscribe to this bug.

Toggle useless messages

Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: exim4: CVE-2021-38371

Date: Sat, 14 Aug 2021 22:47:00 +0200

Source: exim4
Version: 4.94.2-7
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for exim4, this is to start
tracking the issue downstream for us. Note that at time of writing [2]
gives still a 404.

CVE-2021-38371[0]:
| The STARTTLS feature in Exim through 4.94.2 allows response injection
| (buffering) during MTA SMTP sending.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-38371
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38371
[1] https://nostarttls.secvuln.info
[2] https://www.exim.org/static/doc/security/CVE-2021-38371.txt

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

Message #10 received at 992172@bugs.debian.org (full text, mbox, reply):

From: Andreas Metzler <ametzler@bebt.de>

To: Salvatore Bonaccorso <carnil@debian.org>, 992172@bugs.debian.org

Subject: Re: Bug#992172: exim4: CVE-2021-38371

Date: Sun, 15 Aug 2021 07:21:40 +0200

On 2021-08-14 Salvatore Bonaccorso <carnil@debian.org> wrote:
> Source: exim4
> Version: 4.94.2-7
> Severity: important
> Tags: security upstream
> X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

> Hi,

> The following vulnerability was published for exim4, this is to start
> tracking the issue downstream for us. Note that at time of writing [2]
> gives still a 404.

> CVE-2021-38371[0]:
> | The STARTTLS feature in Exim through 4.94.2 allows response injection
> | (buffering) during MTA SMTP sending.
[...]

IIRC that is mitigated in experimental (4.95 rc) by ALPN and unkown
command related changes, I will not be able to check in detail for a
week or so, though.

cu Andreas

Message #15 received at 992172@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Andreas Metzler <ametzler@bebt.de>

Cc: 992172@bugs.debian.org

Subject: Re: Bug#992172: exim4: CVE-2021-38371

Date: Sun, 15 Aug 2021 09:04:46 +0200

HI Andreas,

On Sun, Aug 15, 2021 at 07:21:40AM +0200, Andreas Metzler wrote:
> On 2021-08-14 Salvatore Bonaccorso <carnil@debian.org> wrote:
> > Source: exim4
> > Version: 4.94.2-7
> > Severity: important
> > Tags: security upstream
> > X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>
> 
> > Hi,
> 
> > The following vulnerability was published for exim4, this is to start
> > tracking the issue downstream for us. Note that at time of writing [2]
> > gives still a 404.
> 
> > CVE-2021-38371[0]:
> > | The STARTTLS feature in Exim through 4.94.2 allows response injection
> > | (buffering) during MTA SMTP sending.
> [...]
> 
> IIRC that is mitigated in experimental (4.95 rc) by ALPN and unkown
> command related changes, I will not be able to check in detail for a
> week or so, though.

Ack thanks for the information. Let's wait to see what's written in de
advisory URL once it becomes public.

Thanks for your work on exim4 packages!

Regards,
Salvatore

Send a report that this bug log contains spam.