flask-caching: CVE-2021-33026

Debian Bug report logs - #988916
flask-caching: CVE-2021-33026

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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: flask-caching: CVE-2021-33026

Date: Fri, 21 May 2021 13:58:21 +0200

Source: flask-caching
Version: 1.10.1-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/sh4nks/flask-caching/pull/209
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for flask-caching.

CVE-2021-33026[0]:
| The Flask-Caching extension through 1.10.1 for Flask relies on Pickle
| for serialization, which may lead to remote code execution or local
| privilege escalation. If an attacker gains access to cache storage
| (e.g., filesystem, Memcached, Redis, etc.), they can construct a
| crafted payload, poison the cache, and execute Python code.


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-2021-33026
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33026
[1] https://github.com/sh4nks/flask-caching/pull/209

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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