Vulnerability Description
In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | >= 7.3.0, < 7.3.29 |
| Netapp | Clustered Data Ontap | - |
| Oracle | Sd-Wan Aware | 8.2 |
Related Weaknesses (CWE)
References
- https://bugs.php.net/bug.php?id=81122ExploitIssue TrackingPatch
- https://security.gentoo.org/glsa/202209-20Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211029-0006/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatchVendor Advisory
- https://bugs.php.net/bug.php?id=81122ExploitIssue TrackingPatch
- https://security.gentoo.org/glsa/202209-20Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211029-0006/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatchVendor Advisory
FAQ
What is CVE-2021-21705?
CVE-2021-21705 is a vulnerability with a CVSS score of 4.3 (MEDIUM). In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid ...
How severe is CVE-2021-21705?
CVE-2021-21705 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-21705?
Check the references section above for vendor advisories and patch information. Affected products include: Php Php, Netapp Clustered Data Ontap, Oracle Sd-Wan Aware.