CVE-2024-24791

Denial of service due to improper 100-continue handling in net/http

Description

The net/http HTTP/1.1 client mishandled the case where a server responds to a request with an "Expect: 100-continue" header with a non-informational (200 or higher) status. This mishandling could leave a client connection in an invalid state, where the next request sent on the connection will fail. An attacker sending a request to a net/http/httputil.ReverseProxy proxy can exploit this mishandling to cause a denial of service by sending "Expect: 100-continue" requests which elicit a non-informational response from the backend. Each such request leaves the proxy with an invalid connection, and causes one subsequent request using that connection to fail.

7.5

CVSS

Severity: High

CVSS 3.1 •

EPSS 0.20%

Affected: Go standard library net/http

References

Link	Tags
https://go.dev/cl/591255
https://go.dev/issue/67555
https://groups.google.com/g/golang-dev/c/t0rK-qHBqzY/m/6MMoAZkMAgAJ
https://pkg.go.dev/vuln/GO-2024-2963
https://security.netapp.com/advisory/ntap-20241004-0004/

Frequently Asked Questions

What is the severity of CVE-2024-24791?: CVE-2024-24791 has been scored as a high severity vulnerability.
How to fix CVE-2024-24791?: To fix CVE-2024-24791, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-24791 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-24791 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-24791?: CVE-2024-24791 affects Go standard library net/http.

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