Lucene search
K
Database
Vendors
Products
Years
CVSS
Scanner
Agent Scanning
API Scanning
Manual Audit
Perimeter Scanner
Scanning
Projects
Email
Webhook
Plugins
Resources
Documents
Blog
Glossary
FAQ
Pricing
Contacts
About Us
Partners
Branding Guideline
githubGitHub Advisory DatabaseGHSA-Q2Q7-5PP4-W6PG
HistoryJun 01, 2021 - 9:19 p.m.

Catastrophic backtracking in URL authority parser when passed URL containing many @ characters

2021-06-0121:19:32
CWE-400
GitHub Advisory Database
github.com
65

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.003 Low

EPSS

Percentile

69.2%

JSON

Impact

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.

Patches

The issue has been fixed in urllib3 v1.26.5.

References

For more information

If you have any questions or comments about this advisory:

Affected configurations

Vulners
Node
github_advisory_databaseurllib3Range<1.26.5
CPENameOperatorVersion
urllib3lt1.26.5

Related

redhatcve 1
nessus 29
photon 6
redos 1
prion 1
cbl_mariner 2
openvas 12
redhat 5
ibm 20
osv 8
nvd 1
archlinux 1
amazon 1
cvelist 1
cve 1
fedora 3
f5 1
debiancve 1
veracode 1
ubuntu 1
ubuntucve 1
suse 1
mageia 2
gentoo 1
almalinux 2
oraclelinux 2
rocky 2
oracle 1
redhatcve
redhatcve
CVE-2021-33503
2021-06-06 01:54:37
nessus
nessus
SUSE SLED15 / SLES15 Security Update : python-urllib3 (SUSE-SU-2021:2012-1)
2021-06-21 00:00:00
Photon OS 3.0: Python PHSA-2021-3.0-0266
2021-07-22 00:00:00
Ubuntu 20.04 LTS : urllib3 vulnerability (USN-5812-1)
2023-01-19 00:00:00
photon
photon
Important Photon OS Security Update - PHSA-2021-0266
2021-07-12 00:00:00
Important Photon OS Security Update - PHSA-2021-3.0-0266
2021-07-13 00:00:00
Critical Photon OS Security Update - PHSA-2021-0060
2021-07-13 00:00:00
redos
redos
ROS-20220125-01
2022-01-25 00:00:00
prion
prion
Open redirect
2021-06-29 11:15:00
cbl_mariner
cbl_mariner
CVE-2021-33503 affecting package python-urllib3 1.25.9-2
2021-08-11 06:39:25
CVE-2021-33503 affecting package python-urllib3 for versions less than 1.25.9-3
2022-04-09 06:51:50
openvas
openvas
SUSE: Security Advisory (SUSE-SU-2021:2012-1)
2021-06-20 00:00:00
Ubuntu: Security Advisory (USN-5812-1)
2023-01-20 00:00:00
Fedora: Security Advisory for mingw-python-urllib3 (FEDORA-2021-b14975e43d)
2021-06-20 00:00:00
redhat
redhat
(RHSA-2021:3473) Moderate: Red Hat Automation Platform 1.2.5 security and bugfixes update
2021-09-08 19:16:20
(RHSA-2021:4160) Moderate: python39:3.9 and python39-devel:3.9 security update
2021-11-09 08:26:25
(RHSA-2021:4162) Moderate: python38:3.8 and python38-devel:3.8 security update
2021-11-09 12:47:54
ibm
ibm
Security Bulletin: Vulnerability in Urllib3 affects IBM Spectrum Protect Plus Microsoft File Systems Backup and Restore (CVE-2021-33503)
2021-09-01 09:12:49
Security Bulletin: Watson CP4D Data Stores is vulnerable to urllib3 denial of service vulnerability ( CVE-2021-33503)
2023-07-05 21:05:31
Security Bulletin: Vulnerability in urllib3 affects IBM Cloud Pak for Data System 2.0 (CPDS 2.0)[CVE-2021-33503]
2024-03-11 13:08:06
osv
osv
CVE-2021-33503
2021-06-29 11:15:07
PYSEC-2021-108
2021-06-29 11:15:00
Catastrophic backtracking in URL authority parser when passed URL containing many @ characters
2021-06-01 21:19:32
nvd
nvd
CVE-2021-33503
2021-06-29 11:15:07
archlinux
archlinux
[ASA-202106-25] python-urllib3: denial of service
2021-06-09 00:00:00
amazon
amazon
Medium: python-urllib3
2021-07-14 20:40:00
cvelist
cvelist
CVE-2021-33503
2021-06-29 10:55:35
cve
cve
CVE-2021-33503
2021-06-29 11:15:07
fedora
fedora
[SECURITY] Fedora 34 Update: python-urllib3-1.25.10-5.fc34
2021-07-04 01:10:06
[SECURITY] Fedora 34 Update: mingw-python-urllib3-1.25.10-3.fc34
2021-06-19 01:09:27
[SECURITY] Fedora 33 Update: python-urllib3-1.25.8-5.fc33
2021-07-08 01:08:49
f5
f5
K23456112 : Python urllib3 vulnerability CVE-2021-33503
2021-11-26 00:00:00
debiancve
debiancve
CVE-2021-33503
2021-06-29 11:15:07
veracode
veracode
Denial Of Service (DoS)
2021-06-02 08:30:01
ubuntu
ubuntu
urllib3 vulnerability
2023-01-19 00:00:00
ubuntucve
ubuntucve
CVE-2021-33503
2021-06-29 00:00:00
suse
suse
Security update for python-urllib3 (important)
2021-07-10 00:00:00
mageia
mageia
Updated python-urllib3 package fixes security vulnerabilities
2021-07-27 23:21:53
Updated python-pip packages fix security vulnerabilities
2021-07-25 17:45:06
gentoo
gentoo
urllib3: Multiple vulnerabilities
2021-07-15 00:00:00
almalinux
almalinux
Moderate: python39:3.9 and python39-devel:3.9 security update
2021-11-09 08:26:25
Moderate: python38:3.8 and python38-devel:3.8 security update
2021-11-09 12:47:54
oraclelinux
oraclelinux
python39:3.9 and python39-devel:3.9 security update
2021-11-16 00:00:00
python38:3.8 and python38-devel:3.8 security update
2021-11-16 00:00:00
rocky
rocky
python39:3.9 and python39-devel:3.9 security update
2021-11-09 08:26:25
python38:3.8 and python38-devel:3.8 security update
2021-11-09 12:47:54
oracle
oracle
Oracle Critical Patch Update Advisory - October 2021
2021-10-19 00:00:00

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.003 Low

EPSS

Percentile

69.2%

JSON
Related for GHSA-Q2Q7-5PP4-W6PG
redhatcve1nessus29photon6redos1prion1cbl_mariner2openvas12redhat5ibm20osv8nvd1archlinux1amazon1cvelist1cve1fedora3f51debiancve1veracode1ubuntu1ubuntucve1suse1mageia2gentoo1almalinux2oraclelinux2rocky2oracle1