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.
How to fix CVE-2024-24791
To remediate CVE-2024-24791, upgrade the affected package to a fixed version below.
- —upgrade to 1.21.12 or later
- —no fix listed
- —no fix listed
- —upgrade to 1.21.12 or later
Is CVE-2024-24791 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 1.21.12, >= 1.22.0-0, < 1.22.5
- from 0
- from 0
- from 0, < 1.21.12, >= 1.22.0-0, < 1.22.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |