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FreeBSD: VID-B0374722-3912-11EF-A77E-901B0E9408DC (CVE-2024-24791): go -- net/http: denial of service due to improper 100-continue handling

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FreeBSD: VID-B0374722-3912-11EF-A77E-901B0E9408DC (CVE-2024-24791): go -- net/http: denial of service due to improper 100-continue handling

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/02/2024
Created
07/04/2024
Added
07/03/2024
Modified
07/03/2024

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.

Solution(s)

  • freebsd-upgrade-package-go121
  • freebsd-upgrade-package-go122

References

  • CVE-2024-24791

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