Executive Summary

Informations
Name CVE-2021-33503 First vendor Publication 2021-06-29
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33503

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 3
Application 1
Application 3
Os 2

Sources (Detail)

https://github.com/advisories/GHSA-q2q7-5pp4-w6pg
https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f75926...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://security.gentoo.org/glsa/202107-36
https://www.oracle.com/security-alerts/cpuoct2021.html
Source Url

Alert History

If you want to see full details history, please login or register.
0
1
2
3
4
5
6
7
8
9
10
11
12
Date Informations
2024-11-28 13:57:14
  • Multiple Updates
2023-11-07 21:34:35
  • Multiple Updates
2023-08-24 17:27:41
  • Multiple Updates
2023-01-25 00:27:36
  • Multiple Updates
2021-12-09 00:23:09
  • Multiple Updates
2021-10-20 17:23:12
  • Multiple Updates
2021-09-14 21:23:35
  • Multiple Updates
2021-07-15 21:23:17
  • Multiple Updates
2021-07-15 13:22:56
  • Multiple Updates
2021-07-08 09:22:50
  • Multiple Updates
2021-07-04 09:22:48
  • Multiple Updates
2021-07-02 21:23:09
  • Multiple Updates
2021-06-29 17:22:51
  • First insertion