Vulnerability Description
The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp < v2.1.4 and < v6.0.6.
CVSS Score
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Llhttp | Llhttp | < 2.1.4 |
| Oracle | Graalvm | 20.3.4 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://hackerone.com/reports/1238709ExploitIssue TrackingThird Party Advisory
- https://www.debian.org/security/2022/dsa-5170Mailing ListThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatchThird Party Advisory
- https://hackerone.com/reports/1238709ExploitIssue TrackingThird Party Advisory
- https://www.debian.org/security/2022/dsa-5170Mailing ListThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatchThird Party Advisory
FAQ
What is CVE-2021-22959?
CVE-2021-22959 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp < v2.1.4 and < v6.0.6.
How severe is CVE-2021-22959?
CVE-2021-22959 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-22959?
Check the references section above for vendor advisories and patch information. Affected products include: Llhttp Llhttp, Oracle Graalvm, Debian Debian Linux.