Vulnerability Description
A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Golang | H2C | < 2022-11-04 |
Related Weaknesses (CWE)
References
- https://go.dev/cl/447396PatchVendor Advisory
- https://go.dev/issue/56352ExploitIssue TrackingPatch
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://pkg.go.dev/vuln/GO-2023-1495Vendor Advisory
- https://go.dev/cl/447396PatchVendor Advisory
- https://go.dev/issue/56352ExploitIssue TrackingPatch
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://pkg.go.dev/vuln/GO-2023-1495Vendor Advisory
FAQ
What is CVE-2022-41721?
CVE-2022-41721 is a vulnerability with a CVSS score of 7.5 (HIGH). A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the...
How severe is CVE-2022-41721?
CVE-2022-41721 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-41721?
Check the references section above for vendor advisories and patch information. Affected products include: Golang H2C.