{"id":"CVE-2024-24791","state":"PUBLISHED","title":"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.","publishedAt":"2024-07-02T21:28:25.677Z","updatedAt":"2024-10-04T15:02:46.565Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Go","products":["Go standard library net/http"],"affected":[{"vendor":"Go standard library","product":"net/http","packageName":"net/http","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.21.12","versionType":"semver"},{"version":"1.22.0-0","status":"affected","lessThan":"1.22.5","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"persistConn.readResponse"},{"name":"Client.CloseIdleConnections"},{"name":"Client.Do"},{"name":"Client.Get"},{"name":"Client.Head"},{"name":"Client.Post"},{"name":"Client.PostForm"},{"name":"Get"},{"name":"Head"},{"name":"Post"},{"name":"PostForm"},{"name":"Transport.CancelRequest"},{"name":"Transport.CloseIdleConnections"},{"name":"Transport.RoundTrip"}]}],"references":["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/"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/24xxx/CVE-2024-24791.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-24791","state":"PUBLISHED","datePublished":"2024-07-02T21:28:25.677Z","dateUpdated":"2024-10-04T15:02:46.565Z","assignerShortName":"Go","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateReserved":"2024-01-30T16:05:14.758Z"},"containers":{"cna":{"title":"Denial of service due to improper 100-continue handling in net/http","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Go standard library","product":"net/http","packageName":"net/http","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.21.12","versionType":"semver"},{"version":"1.22.0-0","status":"affected","lessThan":"1.22.5","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"persistConn.readResponse"},{"name":"Client.CloseIdleConnections"},{"name":"Client.Do"},{"name":"Client.Get"},{"name":"Client.Head"},{"name":"Client.Post"},{"name":"Client.PostForm"},{"name":"Get"},{"name":"Head"},{"name":"Post"},{"name":"PostForm"},{"name":"Transport.CancelRequest"},{"name":"Transport.CloseIdleConnections"},{"name":"Transport.RoundTrip"}]}],"references":[{"url":"https://go.dev/cl/591255"},{"url":"https://go.dev/issue/67555"},{"url":"https://groups.google.com/g/golang-dev/c/t0rK-qHBqzY/m/6MMoAZkMAgAJ"},{"url":"https://pkg.go.dev/vuln/GO-2024-2963"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE 400: Uncontrolled Resource Consumption"}]}],"providerMetadata":{"shortName":"Go","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateUpdated":"2024-07-02T21:28:25.677Z"},"credits":[{"lang":"en","value":"Geoff Franks"}]},"adp":[{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"go_standard_library","product":"net\\/http","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"1.21.12","versionType":"custom"},{"version":"1.22.0-0","status":"affected","lessThan":"1.22.5","versionType":"custom"}],"cpes":["cpe:2.3:a:go_standard_library:net\\/http:1.21.12:*:*:*:*:*:*:*"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-07-03T13:39:23.366299Z","id":"CVE-2024-24791","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-07-03T13:45:59.566Z"}},{"title":"CVE Program Container","references":[{"url":"https://go.dev/cl/591255","tags":["x_transferred"]},{"url":"https://go.dev/issue/67555","tags":["x_transferred"]},{"url":"https://groups.google.com/g/golang-dev/c/t0rK-qHBqzY/m/6MMoAZkMAgAJ","tags":["x_transferred"]},{"url":"https://pkg.go.dev/vuln/GO-2024-2963","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20241004-0004/"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-10-04T15:02:46.565Z"}}]}}}