python-urllib3: CVE-2021-33503

Debian Bug report logs - #989848
python-urllib3: CVE-2021-33503

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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: python-urllib3: CVE-2021-33503

Date: Mon, 14 Jun 2021 21:06:25 +0200

Source: python-urllib3
Version: 1.26.4-1
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 python-urllib3.

CVE-2021-33503[0]:
| Catastrophic backtracking in URL authority parser when passed URL
| containing many @ characters

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-2021-33503
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33503
[1] https://github.com/advisories/GHSA-q2q7-5pp4-w6pg
[2] https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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

From: Daniele Tricoli <eriol@debian.org>

To: Salvatore Bonaccorso <carnil@debian.org>, 989848@bugs.debian.org

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

Subject: Re: Bug#989848: python-urllib3: CVE-2021-33503

Date: Tue, 15 Jun 2021 02:19:20 +0200

[Message part 1 (text/plain, inline)]

Hello Salvatore,
thanks for the report!

On Mon, Jun 14, 2021 at 09:06:25PM +0200, Salvatore Bonaccorso wrote:
> Source: python-urllib3
> Version: 1.26.4-1
> 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 python-urllib3.
> 
> CVE-2021-33503[0]:
> | Catastrophic backtracking in URL authority parser when passed URL
> | containing many @ characters

I have prepared an upload[¹] for testing packaging the new upstream release,
but I noticed that the debdiff is bit huge although it's most metadata and
docstrings.[²]
I'm attaching it here: inside there are the fix for CVE-2021-33503, some fixes
for deprecation warnings emitted in Python 3.10 and dockstring changes (mostly
spaces removed) and the metadata stuff.
I will open a pre-unblock request to see if it's fine to upload: if the release
team will not agree I will upload only the cherry pick of the fix you already
pointed to me (many thanks for this!).

For buster I will prepare an package only with the cherry-pick of the fix during
the week, ASAP.

[¹] It's on salsa: https://salsa.debian.org/python-team/packages/python-urllib3
[²] When I looked at the diff between tags I missed the metadata stuff that
obviously is not inside the repository.

Kind regards,

-- 
  Daniele Tricoli 'eriol'
  https://mornie.org

[python-urllib3_1.26.4-1_python-urllib3_1.26.5-1.debdiff (text/plain, attachment)]

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