Vulnerability Details : CVE-2021-21338
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 it has been discovered that Login Handling is susceptible to open redirection which allows attackers redirecting to arbitrary content, and conducting phishing attacks. No authentication is required in order to exploit this vulnerability. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.
Vulnerability category: Open redirect
Products affected by CVE-2021-21338
- cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
- cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
- cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
- cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
- cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
- cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-21338
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21338
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST | |
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST | |
4.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N |
2.8
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2021-21338
-
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.Assigned by: security-advisories@github.com (Primary)
References for CVE-2021-21338
-
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-4jhw-2p6j-5wmp
Third Party Advisory
-
https://packagist.org/packages/typo3/cms-core
typo3/cms-core - PackagistRelease Notes;Third Party Advisory
-
https://typo3.org/security/advisory/typo3-core-sa-2021-001
TYPO3-CORE-SA-2021-001: Open Redirection in Login HandlingVendor Advisory
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