CVE-2024-24791

Published: 2 July 2024

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.

Notes

Packages built using golang need to be rebuilt once the
vulnerability has been fixed. This CVE entry does not
list packages that need rebuilding outside of the main
repository or the Ubuntu variants with PPA overlays.

Warning: do not include nullboot in the list of no-change
rebuilds after fixing an issue in golang.

Status

References

• https://www.cve.org/CVERecord?id=CVE-2024-24791
• 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
• NVD
• Launchpad
• Debian