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CVE-2021-33503

Status Candidate

Overview

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

Related Files

Ubuntu Security Notice USN-5812-1
Posted Jan 19, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5812-1 - It was discovered that urllib3 incorrectly handled certain characters in URLs. A remote attacker could possibly use this issue to cause urllib3 to consume resources, leading to a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2021-33503
SHA-256 | 96678a2b7c716e36fc6c1e5b770de64662a5334ab9bf447b923f25cf5ed77932
Red Hat Security Advisory 2021-4702-01
Posted Nov 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4702-01 - Red Hat Satellite is a systems management tool for Linux-based infrastructure. It allows for provisioning, remote management, and monitoring of multiple Linux deployments with a single centralized tool. Issues addressed include XML injection, code execution, denial of service, information leakage, local file inclusion, man-in-the-middle, memory leak, open redirection, password leak, remote file inclusion, remote shell upload, and traversal vulnerabilities.

tags | advisory, remote, denial of service, shell, local, vulnerability, code execution, memory leak, file inclusion
systems | linux, redhat
advisories | CVE-2019-14853, CVE-2019-14859, CVE-2019-25025, CVE-2020-14343, CVE-2020-26247, CVE-2020-8130, CVE-2020-8908, CVE-2021-20256, CVE-2021-21330, CVE-2021-22885, CVE-2021-22902, CVE-2021-22904, CVE-2021-28658, CVE-2021-29509, CVE-2021-31542, CVE-2021-32740, CVE-2021-33203, CVE-2021-33503, CVE-2021-33571, CVE-2021-3413, CVE-2021-3494
SHA-256 | 8add47f95e7029cc9b29e159ddcedaf8b823cd7f438afa063e0aa09ebed5c91a
Red Hat Security Advisory 2021-4160-03
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4160-03 - 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 cross site scripting, denial of service, and information leakage vulnerabilities.

tags | advisory, denial of service, vulnerability, xss, python
systems | linux, redhat
advisories | CVE-2021-28957, CVE-2021-29921, CVE-2021-33503, CVE-2021-3426, CVE-2021-3572, CVE-2021-3733, CVE-2021-3737
SHA-256 | d4c975c8f0fd0283493287448972680095337bb6113fc44f4837d867665d4273
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
SHA-256 | e213dc130fe6c0f9ceeb6dbc6201ba34dd61a302b188cea3f4e8ad9fc8057754
Red Hat Security Advisory 2021-3473-01
Posted Sep 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3473-01 - Red Hat Ansible Automation Platform integrates Red Hat's automation suite consisting of Red Hat Ansible Tower, Red Hat Ansible Engine, and use-case specific capabilities for Microsoft Windows,network, security, and more, along with Software-as-a-Service -based capabilities and features for organization-wide effectiveness. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat, windows
advisories | CVE-2021-33503
SHA-256 | c402e7fa5f24e7949b86c443dcb2450ee977096d6f466a3d7bd35b13731308b5
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
SHA-256 | f49b54d77f89082e96a8e69fc49612163d813deff1eacac5d74e788baf88efbf
Gentoo Linux Security Advisory 202107-36
Posted Jul 15, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202107-36 - Multiple vulnerabilities have been found in urllib3, the worst of which could result in a Denial of Service condition. Versions less than 1.26.5 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2021-28363, CVE-2021-33503
SHA-256 | d6f9dff903ace617c49b44ad13ca943dc52549bd0c464c31b70d60646cb1f840
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