From: Hitendra Prajapati Date: Fri, 11 Apr 2025 05:40:49 +0000 (+0530) Subject: go: fix CVE-2025-22871 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b343da566856ad17b5dc03d42d9241bcb44cad1b;p=thirdparty%2Fopenembedded%2Fopenembedded-core-contrib.git go: fix CVE-2025-22871 Upstream-Status: Backport from https://github.com/golang/go/commit/15e01a2e43ecb8c7e15ff7e9d62fe3f10dcac931 Signed-off-by: Hitendra Prajapati Signed-off-by: Steve Sakoman --- diff --git a/meta/recipes-devtools/go/go-1.22.12.inc b/meta/recipes-devtools/go/go-1.22.12.inc index df77794506..b154aa3984 100644 --- a/meta/recipes-devtools/go/go-1.22.12.inc +++ b/meta/recipes-devtools/go/go-1.22.12.inc @@ -15,5 +15,6 @@ SRC_URI += "\ file://0008-src-cmd-dist-buildgo.go-do-not-hardcode-host-compile.patch \ file://0009-go-Filter-build-paths-on-staticly-linked-arches.patch \ file://CVE-2025-22870.patch \ + file://CVE-2025-22871.patch \ " SRC_URI[main.sha256sum] = "012a7e1f37f362c0918c1dfa3334458ac2da1628c4b9cf4d9ca02db986e17d71" diff --git a/meta/recipes-devtools/go/go/CVE-2025-22871.patch b/meta/recipes-devtools/go/go/CVE-2025-22871.patch new file mode 100644 index 0000000000..2750178a42 --- /dev/null +++ b/meta/recipes-devtools/go/go/CVE-2025-22871.patch @@ -0,0 +1,172 @@ +From 15e01a2e43ecb8c7e15ff7e9d62fe3f10dcac931 Mon Sep 17 00:00:00 2001 +From: Damien Neil +Date: Wed, 26 Feb 2025 13:40:00 -0800 +Subject: [PATCH] [release-branch.go1.23] net/http: reject newlines in + chunk-size lines + +Unlike request headers, where we are allowed to leniently accept +a bare LF in place of a CRLF, chunked bodies must always use CRLF +line terminators. We were already enforcing this for chunk-data lines; +do so for chunk-size lines as well. Also reject bare CRs anywhere +other than as part of the CRLF terminator. + +Fixes CVE-2025-22871 +Fixes #72010 +For #71988 + +Change-Id: Ib0e21af5a8ba28c2a1ca52b72af8e2265ec79e4a +Reviewed-on: https://go-review.googlesource.com/c/go/+/652998 +Reviewed-by: Jonathan Amsterdam +LUCI-TryBot-Result: Go LUCI +(cherry picked from commit d31c805535f3fde95646ee4d87636aaaea66847b) +Reviewed-on: https://go-review.googlesource.com/c/go/+/657216 + +Upstream-Status: Backport [https://github.com/golang/go/commit/15e01a2e43ecb8c7e15ff7e9d62fe3f10dcac931] +CVE: CVE-2025-22871 +Signed-off-by: Hitendra Prajapati +--- + src/net/http/internal/chunked.go | 19 +++++++++-- + src/net/http/internal/chunked_test.go | 27 +++++++++++++++ + src/net/http/serve_test.go | 49 +++++++++++++++++++++++++++ + 3 files changed, 92 insertions(+), 3 deletions(-) + +diff --git a/src/net/http/internal/chunked.go b/src/net/http/internal/chunked.go +index 196b5d8..0b08a97 100644 +--- a/src/net/http/internal/chunked.go ++++ b/src/net/http/internal/chunked.go +@@ -164,6 +164,19 @@ func readChunkLine(b *bufio.Reader) ([]byte, error) { + } + return nil, err + } ++ ++ // RFC 9112 permits parsers to accept a bare \n as a line ending in headers, ++ // but not in chunked encoding lines. See https://www.rfc-editor.org/errata/eid7633, ++ // which explicitly rejects a clarification permitting \n as a chunk terminator. ++ // ++ // Verify that the line ends in a CRLF, and that no CRs appear before the end. ++ if idx := bytes.IndexByte(p, '\r'); idx == -1 { ++ return nil, errors.New("chunked line ends with bare LF") ++ } else if idx != len(p)-2 { ++ return nil, errors.New("invalid CR in chunked line") ++ } ++ p = p[:len(p)-2] // trim CRLF ++ + if len(p) >= maxLineLength { + return nil, ErrLineTooLong + } +@@ -171,14 +184,14 @@ func readChunkLine(b *bufio.Reader) ([]byte, error) { + } + + func trimTrailingWhitespace(b []byte) []byte { +- for len(b) > 0 && isASCIISpace(b[len(b)-1]) { ++ for len(b) > 0 && isOWS(b[len(b)-1]) { + b = b[:len(b)-1] + } + return b + } + +-func isASCIISpace(b byte) bool { +- return b == ' ' || b == '\t' || b == '\n' || b == '\r' ++func isOWS(b byte) bool { ++ return b == ' ' || b == '\t' + } + + var semi = []byte(";") +diff --git a/src/net/http/internal/chunked_test.go b/src/net/http/internal/chunked_test.go +index af79711..312f173 100644 +--- a/src/net/http/internal/chunked_test.go ++++ b/src/net/http/internal/chunked_test.go +@@ -280,6 +280,33 @@ func TestChunkReaderByteAtATime(t *testing.T) { + } + } + ++func TestChunkInvalidInputs(t *testing.T) { ++ for _, test := range []struct { ++ name string ++ b string ++ }{{ ++ name: "bare LF in chunk size", ++ b: "1\na\r\n0\r\n", ++ }, { ++ name: "extra LF in chunk size", ++ b: "1\r\r\na\r\n0\r\n", ++ }, { ++ name: "bare LF in chunk data", ++ b: "1\r\na\n0\r\n", ++ }, { ++ name: "bare LF in chunk extension", ++ b: "1;\na\r\n0\r\n", ++ }} { ++ t.Run(test.name, func(t *testing.T) { ++ r := NewChunkedReader(strings.NewReader(test.b)) ++ got, err := io.ReadAll(r) ++ if err == nil { ++ t.Fatalf("unexpectedly parsed invalid chunked data:\n%q", got) ++ } ++ }) ++ } ++} ++ + type funcReader struct { + f func(iteration int) ([]byte, error) + i int +diff --git a/src/net/http/serve_test.go b/src/net/http/serve_test.go +index 0c76f1b..0e8af02 100644 +--- a/src/net/http/serve_test.go ++++ b/src/net/http/serve_test.go +@@ -6980,3 +6980,52 @@ func testDisableContentLength(t *testing.T, mode testMode) { + t.Fatal(err) + } + } ++ ++func TestInvalidChunkedBodies(t *testing.T) { ++ for _, test := range []struct { ++ name string ++ b string ++ }{{ ++ name: "bare LF in chunk size", ++ b: "1\na\r\n0\r\n\r\n", ++ }, { ++ name: "bare LF at body end", ++ b: "1\r\na\r\n0\r\n\n", ++ }} { ++ t.Run(test.name, func(t *testing.T) { ++ reqc := make(chan error) ++ ts := newClientServerTest(t, http1Mode, HandlerFunc(func(w ResponseWriter, r *Request) { ++ got, err := io.ReadAll(r.Body) ++ if err == nil { ++ t.Logf("read body: %q", got) ++ } ++ reqc <- err ++ })).ts ++ ++ serverURL, err := url.Parse(ts.URL) ++ if err != nil { ++ t.Fatal(err) ++ } ++ ++ conn, err := net.Dial("tcp", serverURL.Host) ++ if err != nil { ++ t.Fatal(err) ++ } ++ ++ if _, err := conn.Write([]byte( ++ "POST / HTTP/1.1\r\n" + ++ "Host: localhost\r\n" + ++ "Transfer-Encoding: chunked\r\n" + ++ "Connection: close\r\n" + ++ "\r\n" + ++ test.b)); err != nil { ++ t.Fatal(err) ++ } ++ conn.(*net.TCPConn).CloseWrite() ++ ++ if err := <-reqc; err == nil { ++ t.Errorf("server handler: io.ReadAll(r.Body) succeeded, want error") ++ } ++ }) ++ } ++} +-- +2.25.1 +