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CVE-2021-23336

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2021-4151-06
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4151-06 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include code execution, cross site scripting, denial of service, and traversal vulnerabilities.

tags | advisory, denial of service, vulnerability, code execution, xss, python
systems | linux, redhat
advisories | CVE-2020-27619, CVE-2020-28493, CVE-2021-20095, CVE-2021-20270, CVE-2021-23336, CVE-2021-27291, CVE-2021-28957, CVE-2021-42771
MD5 | bbdcbb8a6e7f541b1f1df6973fbaec39
Red Hat Security Advisory 2021-4162-05
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4162-05 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include code execution, cross site scripting, denial of service, double free, information leakage, and traversal vulnerabilities.

tags | advisory, denial of service, vulnerability, code execution, xss, python
systems | linux, redhat
advisories | CVE-2019-18874, CVE-2020-28493, CVE-2021-20095, CVE-2021-23336, CVE-2021-28957, CVE-2021-29921, CVE-2021-33503, CVE-2021-3426, CVE-2021-3572, CVE-2021-42771
MD5 | a1abf157e747ff42fc2816f1b50912dd
Red Hat Security Advisory 2021-3254-01
Posted Aug 30, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3254-01 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include buffer overflow, code execution, cross site scripting, denial of service, information leakage, integer overflow, and traversal vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability, code execution, xss, python
systems | linux, redhat
advisories | CVE-2020-25659, CVE-2020-27619, CVE-2020-27783, CVE-2020-28493, CVE-2020-36242, CVE-2021-20095, CVE-2021-23336, CVE-2021-28957, CVE-2021-29921, CVE-2021-3177, CVE-2021-33503, CVE-2021-3426, CVE-2021-3572
MD5 | 70a4248bf0bf2e0433ba6e3b6f69dd2b
Red Hat Security Advisory 2021-3252-01
Posted Aug 27, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3252-01 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include buffer overflow, code execution, denial of service, and traversal vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability, code execution, python
systems | linux, redhat
advisories | CVE-2020-27619, CVE-2020-28493, CVE-2021-20095, CVE-2021-20270, CVE-2021-23336, CVE-2021-27291, CVE-2021-3177
MD5 | 64d7bbcc756663f32879557072f66329
Red Hat Security Advisory 2021-2543-01
Posted Jun 24, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2543-01 - Red Hat OpenShift Jaeger is Red Hat's distribution of the Jaeger project, tailored for installation into an on-premise OpenShift Container Platform installation. Issues addressed include code execution and denial of service vulnerabilities.

tags | advisory, denial of service, vulnerability, code execution
systems | linux, redhat
advisories | CVE-2016-10228, CVE-2017-14502, CVE-2019-25013, CVE-2019-2708, CVE-2019-3842, CVE-2019-9169, CVE-2020-13434, CVE-2020-13776, CVE-2020-13949, CVE-2020-15358, CVE-2020-24977, CVE-2020-26116, CVE-2020-27618, CVE-2020-27619, CVE-2020-28196, CVE-2020-28362, CVE-2020-28500, CVE-2020-29361, CVE-2020-29362, CVE-2020-29363, CVE-2020-8231, CVE-2020-8284, CVE-2020-8285, CVE-2020-8286, CVE-2020-8927, CVE-2021-20305, CVE-2021-23336
MD5 | 999fa032c4df34cdc39fca102e2f2111
Red Hat Security Advisory 2021-2532-01
Posted Jun 23, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2532-01 - Red Hat OpenShift Jaeger is Red Hat's distribution of the Jaeger project, tailored for installation into an on-premise OpenShift Container Platform installation.

tags | advisory
systems | linux, redhat
advisories | CVE-2016-10228, CVE-2017-14502, CVE-2019-25013, CVE-2019-2708, CVE-2019-3842, CVE-2019-9169, CVE-2020-13434, CVE-2020-13776, CVE-2020-15358, CVE-2020-24977, CVE-2020-26116, CVE-2020-27618, CVE-2020-27619, CVE-2020-28196, CVE-2020-28362, CVE-2020-29361, CVE-2020-29362, CVE-2020-29363, CVE-2020-8231, CVE-2020-8284, CVE-2020-8285, CVE-2020-8286, CVE-2020-8927, CVE-2021-20305, CVE-2021-23336, CVE-2021-27219, CVE-2021-3114
MD5 | 66a51cff0ef120e7619f58316d2306b6
Red Hat Security Advisory 2021-1633-01
Posted May 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1633-01 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include buffer overflow and crlf injection vulnerabilities.

tags | advisory, overflow, vulnerability, python
systems | linux, redhat
advisories | CVE-2020-26116, CVE-2020-27619, CVE-2021-23336, CVE-2021-3177
MD5 | efd98392a31d2d2957c03e7c55784ea7
Gentoo Linux Security Advisory 202104-04
Posted May 3, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202104-4 - Multiple vulnerabilities have been found in Python, the worst of which might allow attackers to access sensitive information. Versions less than 3.9.2_p1 are affected.

tags | advisory, vulnerability, python
systems | linux, gentoo
advisories | CVE-2021-23336, CVE-2021-3426
MD5 | e0e6beeb977ada2ce23c78cffec1ab55
Ubuntu Security Notice USN-4742-1
Posted Feb 22, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4742-1 - It was discovered that Django incorrectly accepted semicolons as query parameters. A remote attacker could possibly use this issue to perform a Web Cache Poisoning attack.

tags | advisory, remote, web
systems | linux, ubuntu
advisories | CVE-2021-23336
MD5 | 279bc118d71b269f7d49c712f6ea35c4
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