CVE-2021-23336

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2021-23336
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-02-15 13:15:00 UTC
Updated2023-11-07 03:30:00 UTC
DescriptionThe package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.

Risk And Classification

Problem Types: CWE-444

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Application Djangoproject Django All All All All
Operating System Fedoraproject Fedora 32 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Fedoraproject Fedora 34 All All All
Operating System Fedoraproject Fedora 32 All All All
Operating System Fedoraproject Fedora 33 All All All
Application Netapp Cloud Backup - All All All
Application Netapp Inventory Collect Tool - All All All
Application Netapp Ontap Select Deploy Administration Utility - All All All
Application Netapp Snapcenter - All All All
Application Oracle Communications Offline Mediation Controller 12.0.0.3.0 All All All
Application Oracle Communications Pricing Design Center 12.0.0.3.0 All All All
Application Oracle Enterprise Manager Ops Center 12.4.0.0 All All All
Operating System Oracle Zfs Storage Appliance 8.8 All All All
Application Python Python All All All All
Application Python Python All All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 33 Update: python2.7-2.7.18-11.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 34 Update: mingw-python3-3.9.2-2.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] [DLA 2619-1] python3.5 security update MLIST lists.debian.org
Pony Mail! MLIST lists.apache.org
[SECURITY] Fedora 32 Update: python3.10-3.10.0~a6-1.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 32 Update: mingw-python3-3.8.8-1.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 32 Update: mingw-python3-3.8.8-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python2.7-2.7.18-11.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 32 Update: python37-3.7.10-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 32 Update: python39-3.9.2-1.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Third Party Advisory
[SECURITY] Fedora 34 Update: python3.10-3.10.0~a6-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 32 Update: python37-3.7.10-1.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Third Party Advisory
Pony Mail! MLIST lists.apache.org Mailing List, Third Party Advisory
[SECURITY] Fedora 32 Update: python3-3.8.9-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python3.10-3.10.0~a6-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 34 Update: python-django-3.1.7-1.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 32 Update: python-django-3.0.13-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python3.9-3.9.2-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Third Party Advisory
[SECURITY] Fedora 32 Update: python36-3.6.13-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
oss-security - Django security releases: CVE-2021-23336: Web cache poisoning via ``django.utils.http.limited_parse_qsl()`` MLIST www.openwall.com Mailing List, Third Party Advisory
Oracle Critical Patch Update Advisory - July 2021 N/A www.oracle.com
[announce] 20210501 Apache Airflow CVE: CVE-2021-28359: Apache Airflow Reflected XSS via Origin Query Argument in URL lists.apache.org
[SECURITY] Fedora 34 Update: python3.10-3.10.0~a6-1.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Oracle Critical Patch Update Advisory - October 2021 MISC www.oracle.com
[SECURITY] Fedora 33 Update: python-django-3.0.13-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python3.8-3.8.8-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Third Party Advisory
Oracle Critical Patch Update Advisory - January 2022 MISC www.oracle.com
oss-security - CVE-2021-28359: Apache Airflow Reflected XSS via Origin Query Argument in URL MLIST www.openwall.com
[SECURITY] Fedora 32 Update: python-django-3.0.13-1.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] [DLA 2569-1] python-django security update MLIST lists.debian.org Mailing List, Third Party Advisory
[SECURITY] Fedora 34 Update: python2.7-2.7.18-11.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 33 Update: mingw-python3-3.9.2-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 32 Update: python39-3.9.2-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python3.6-3.6.13-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] [DLA 2628-1] python2.7 security update MLIST lists.debian.org
[SECURITY] Fedora 32 Update: python36-3.6.13-1.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Third Party Advisory
Pony Mail! MLIST lists.apache.org
[SECURITY] [DLA 3575-1] python2.7 security update MLIST lists.debian.org
[SECURITY] Fedora 33 Update: python3.7-3.7.10-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python3.8-3.8.8-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 34 Update: python2.7-2.7.18-11.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
Python: Multiple vulnerabilities (GLSA 202104-04) — Gentoo security GENTOO security.gentoo.org
[SECURITY] Fedora 34 Update: mingw-python3-3.9.2-2.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: mingw-python3-3.9.2-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
Web Cache Poisoning in python/cpython | Snyk MISC snyk.io Exploit, Third Party Advisory
[SECURITY] Fedora 32 Update: python3.10-3.10.0~a6-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python3.10-3.10.0~a6-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python3.6-3.6.13-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Third Party Advisory
[SECURITY] Fedora 32 Update: python3-3.8.9-1.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 33 Update: python-django-3.0.13-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
bpo-42967: only use '&' as a query string separator by AdamGold · Pull Request #24297 · python/cpython · GitHub MISC github.com Third Party Advisory
[SECURITY] Fedora 33 Update: python3.7-3.7.10-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Third Party Advisory
[mina-dev] 20210225 [jira] [Created] (FTPSERVER-500) Security vulnerability in common/lib/log4j-1.2.17.jar lists.apache.org
Oracle Critical Patch Update Advisory - April 2021 MISC www.oracle.com
CVE-2021-23336 Python Vulnerability in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
[SECURITY] Fedora 34 Update: python-django-3.1.7-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[airflow-users] 20210501 CVE-2021-28359: Apache Airflow Reflected XSS via Origin Query Argument in URL lists.apache.org
[SECURITY] Fedora 33 Update: python3.9-3.9.2-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
Cache poisoning in popular open source packages | Snyk Blog MISC snyk.io Technical Description, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Snyk Security Team

Legacy QID Mappings

  • 159200 Oracle Enterprise Linux Security Update for python3 (ELSA-2021-1633)
  • 159463 Oracle Enterprise Linux Security Update for python27:2.7 (ELSA-2021-4151)
  • 159467 Oracle Enterprise Linux Security Update for python38:3.8 and python38-devel:3.8 (ELSA-2021-4162)
  • 174803 SUSE Enterprise Linux Security update for python (SUSE-SU-2021:0768-1)
  • 174820 SUSE Enterprise Linux Security update for python3 (SUSE-SU-2021:0886-1)
  • 174825 SUSE Enterprise Linux Security update for python36 (SUSE-SU-2021:0887-1)
  • 174842 SUSE Enterprise Linux Security update for python3 (SUSE-SU-2021:0947-1)
  • 174861 SUSE Enterprise Linux Security Update for python3 (SUSE-SU-2021:0947-1)
  • 178536 Debian Security Update for python3.5 (DLA 2619-1)
  • 178546 Debian Security Update for python2.7 (DLA 2628-1)
  • 180273 Debian Security Update for python3.9pypy3python-django (CVE-2021-23336)
  • 181172 Debian Security Update for python-django (DLA 3164-1)
  • 239323 Red Hat Update for python3 (RHSA-2021:1633)
  • 239580 Red Hat Update for rh-python38 (RHSA-2021:3254)
  • 239582 Red Hat Update for python27 (RHSA-2021:3252)
  • 239826 Red Hat Update for python27:2.7 (RHSA-2021:4151)
  • 239845 Red Hat Update for python38:3.8 and python38-devel:3.8 (RHSA-2021:4162)
  • 281120 Fedora Security Update for python2.7 (FEDORA-2021-12df7f7382)
  • 281121 Fedora Security Update for python2.7 (FEDORA-2021-98720f3785)
  • 281358 Fedora Security Update for python3 (FEDORA-2021-b6b6093b3a)
  • 281531 Fedora Security Update for mingw (FEDORA-2021-309bc2e727)
  • 281532 Fedora Security Update for mingw (FEDORA-2021-b76ede8f4d)
  • 281533 Fedora Security Update for mingw (FEDORA-2021-e525e48886)
  • 281542 Fedora Security Update for python (FEDORA-2021-ef83e8525a)
  • 281543 Fedora Security Update for python (FEDORA-2021-1bb399a5af)
  • 281544 Fedora Security Update for python (FEDORA-2021-e22bb0e548)
  • 281547 Fedora Security Update for python3.10 (FEDORA-2021-2897f5366c)
  • 281548 Fedora Security Update for python3.10 (FEDORA-2021-5a09621ebb)
  • 281549 Fedora Security Update for python3.10 (FEDORA-2021-b326fcb83f)
  • 281604 Fedora Security Update for python3.9 (FEDORA-2021-b1843407ca)
  • 281609 Fedora Security Update for python3.6 (FEDORA-2021-7fa9dc84d4)
  • 352278 Amazon Linux Security Update for python35: ALAS-2021-1498
  • 352305 Amazon Linux Security Advisory for python36: ALAS-2021-1500
  • 352365 Amazon Linux Security Advisory for python34: ALAS-2021-1504
  • 352371 Amazon Linux Security Advisory for python3: ALAS2-2021-1640
  • 353942 Amazon Linux Security Advisory for python : ALAS2-2022-1802
  • 353955 Amazon Linux Security Advisory for python27 : ALAS-2022-1593
  • 375537 Python Buffer Overflow/Web Cache Poisoning Vulnerability
  • 377387 Alibaba Cloud Linux Security Update for python3 (ALINUX3-SA-2021:0080)
  • 500595 Alpine Linux Security Update for python3
  • 501677 Alpine Linux Security Update for py3-django
  • 504345 Alpine Linux Security Update for python3
  • 6000148 Debian Security Update for python2.7 (DLA 3575-1)
  • 670241 EulerOS Security Update for python (EulerOS-SA-2021-1835)
  • 670313 EulerOS Security Update for python (EulerOS-SA-2021-1911)
  • 670338 EulerOS Security Update for python3 (EulerOS-SA-2021-1886)
  • 670368 EulerOS Security Update for python3 (EulerOS-SA-2021-1957)
  • 670389 EulerOS Security Update for python3 (EulerOS-SA-2021-1936)
  • 670668 EulerOS Security Update for python (EulerOS-SA-2021-2427)
  • 710014 Gentoo Linux Python Multiple Vulnerabilities (GLSA 202104-04)
  • 750307 OpenSUSE Security Update for python (openSUSE-SU-2021:0435-1)
  • 900046 CBL-Mariner Linux Security Update for python3 3.7.9
  • 900925 Common Base Linux Mariner (CBL-Mariner) Security Update for python2 (6827-1)
  • 903306 Common Base Linux Mariner (CBL-Mariner) Security Update for python2 (3910)
  • 903651 Common Base Linux Mariner (CBL-Mariner) Security Update for python3 (3911)
  • 940187 AlmaLinux Security Update for python3 (ALSA-2021:1633)
  • 940522 AlmaLinux Security Update for python27:2.7 (ALSA-2021:4151)
  • 940526 AlmaLinux Security Update for python38:3.8 and python38-devel:3.8 (ALSA-2021:4162)
  • 960320 Rocky Linux Security Update for python27:2.7 (RLSA-2021:4151)
  • 960342 Rocky Linux Security Update for python38:3.8 and python38-devel:3.8 (RLSA-2021:4162)
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report