NVD - CVE-2021-23336

CVE-2021-23336 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

The 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.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

CNA: Snyk

Base Score: 5.9 MEDIUM

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 4.0 MEDIUM

Vector: (AV:N/AC:H/Au:N/C:N/I:P/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.openwall.com/lists/oss-security/2021/02/19/4	Mailing List Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/01/2	Mailing List Third Party Advisory
https://github.com/python/cpython/pull/24297	Patch Third Party Advisory
https://lists.apache.org/thread.html/ra8ce70088ba291f358e077cafdb14d174b7a1ce9a9d86d1b332d6367%40%3Cusers.airflow.apache.org%3E
https://lists.apache.org/thread.html/rc005f4de9d9b0ba943ceb8ff5a21a5c6ff8a9df52632476698d99432%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://lists.debian.org/debian-lts-announce/2021/02/msg00030.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00015.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3EPYWWFDV22CJ5AOH5VCE72DOASZZ255/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YKKDLXL3UEZ3J426C2XTBS63AHE46SM/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46N6A52EGSXHJYCZWVMBJJIH4NWIV2B5/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZTM7KLHFCE3LWSEVO2NAFLUHMGYMCRY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IHQDU7NXA7EWAE4W7VO6MURVJIULEPPR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJXCMHLY7H3FIYLE4OKDYUILU2CCRUCZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LVNH6Z24IG3E67ZCQGGJ46FZB4XFLQNZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MNUN5SOMFL2BBKP6ZAICIIUPQKZDMGYO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N6VXJZSZ6N64AILJX4CTMACYGQGHHD5C/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJSCSN722JO2E2AGPWD4NTGVELVRPB4R/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OAGSWNGZJ6HQ5ISA67SNMK3CJRKICET7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RSLQD5CCM75IZGAMBDGUZEATYU5YSGJ7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGIY6I4YS3WOXAK4SXKIEOC2G4VZKIR7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFTELUMWZE3KV3JB2H5EE6VFRZFRD5MV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2LSKBEFI5SYEY5FM6ICZVZM5WRQUCS4/
https://security.gentoo.org/glsa/202104-04	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210326-0004/	Third Party Advisory
https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages/	Technical Description Third Party Advisory
https://snyk.io/vuln/SNYK-UPSTREAM-PYTHONCPYTHON-1074933	Exploit Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html	Patch Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-444	Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

37 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-23336
NVD Published Date:
02/15/2021
NVD Last Modified:
11/06/2023
Source:
Snyk

CVE-2021-23336 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by Snyk 5/14/2024 4:19:19 AM

CVE Modified by Snyk 11/06/2023 10:30:51 PM

CVE Modified by Snyk 9/20/2023 6:15:10 PM

Modified Analysis by NIST 3/04/2022 2:13:15 PM

CVE Modified by Snyk 2/07/2022 11:15:39 AM

Modified Analysis by NIST 12/07/2021 4:02:35 PM

CVE Modified by Snyk 10/20/2021 7:16:08 AM

CVE Modified by Snyk 7/20/2021 7:15:30 PM

Modified Analysis by NIST 6/17/2021 1:13:46 PM

CVE Modified by Snyk 6/14/2021 2:15:36 PM

CVE Modified by Snyk 5/28/2021 11:15:07 PM

CVE Modified by Snyk 5/03/2021 8:15:08 PM

CVE Modified by Snyk 5/01/2021 8:15:07 PM

CVE Modified by Snyk 5/01/2021 6:15:07 PM

CVE Modified by Snyk 4/30/2021 10:15:13 PM

Modified Analysis by NIST 4/29/2021 10:07:26 AM

CVE Modified by Snyk 4/23/2021 1:15:08 PM

CVE Modified by Snyk 4/17/2021 6:15:13 PM

CVE Modified by Snyk 4/05/2021 3:15:14 PM

Modified Analysis by NIST 3/30/2021 9:03:07 AM

CVE Modified by Snyk 3/26/2021 7:15:13 AM

Modified Analysis by NIST 3/23/2021 9:22:30 PM

CVE Modified by Snyk 3/19/2021 7:15:22 PM

CVE Modified by Snyk 3/14/2021 11:15:14 PM

CVE Modified by Snyk 3/13/2021 6:15:13 PM

CVE Modified by Snyk 3/12/2021 6:15:13 PM

CVE Modified by Snyk 3/11/2021 9:15:14 PM

Modified Analysis by NIST 3/02/2021 11:43:58 AM

CVE Modified by Snyk 3/01/2021 2:15:12 PM

CVE Modified by Snyk 2/28/2021 3:15:12 PM

Initial Analysis by NIST 2/26/2021 1:51:47 PM

CVE Modified by Snyk 2/25/2021 10:15:13 PM

CVE Modified by Snyk 2/25/2021 12:15:28 PM

CVE Modified by Snyk 2/24/2021 6:15:13 PM

CVE Modified by Snyk 2/19/2021 10:15:13 PM

CVE Modified by Snyk 2/19/2021 2:15:12 PM

CVE Modified by Snyk 2/19/2021 8:15:14 AM

Quick Info