diff options
Diffstat (limited to 'poky/meta/recipes-devtools/go/go-1.18/CVE-2022-2879.patch')
| -rw-r--r-- | poky/meta/recipes-devtools/go/go-1.18/CVE-2022-2879.patch | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/poky/meta/recipes-devtools/go/go-1.18/CVE-2022-2879.patch b/poky/meta/recipes-devtools/go/go-1.18/CVE-2022-2879.patch new file mode 100644 index 0000000000..0315e1a3ee --- /dev/null +++ b/poky/meta/recipes-devtools/go/go-1.18/CVE-2022-2879.patch @@ -0,0 +1,177 @@ +From d064ed520a7cc6b480f9565e30751e695d394f4e Mon Sep 17 00:00:00 2001 +From: Damien Neil <dneil@google.com> +Date: Fri, 2 Sep 2022 20:45:18 -0700 +Subject: [PATCH] archive/tar: limit size of headers + +Set a 1MiB limit on special file blocks (PAX headers, GNU long names, +GNU link names), to avoid reading arbitrarily large amounts of data +into memory. + +Thanks to Adam Korczynski (ADA Logics) and OSS-Fuzz for reporting +this issue. + +Fixes CVE-2022-2879 +Updates #54853 +Fixes #55925 + +Change-Id: I85136d6ff1e0af101a112190e027987ab4335680 +Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1565555 +Reviewed-by: Tatiana Bradley <tatianabradley@google.com> +Run-TryBot: Roland Shoemaker <bracewell@google.com> +Reviewed-by: Roland Shoemaker <bracewell@google.com> +(cherry picked from commit 6ee768cef6b82adf7a90dcf367a1699ef694f3b2) +Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1590622 +Reviewed-by: Damien Neil <dneil@google.com> +Reviewed-by: Julie Qiu <julieqiu@google.com> +Reviewed-on: https://go-review.googlesource.com/c/go/+/438500 +Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> +Reviewed-by: Carlos Amedee <carlos@golang.org> +Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> +Run-TryBot: Carlos Amedee <carlos@golang.org> +TryBot-Result: Gopher Robot <gobot@golang.org> + +CVE: CVE-2022-2879 +Upstream-Status: Backport [0a723816cd205576945fa57fbdde7e6532d59d08] +Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com> +--- + src/archive/tar/format.go | 4 ++++ + src/archive/tar/reader.go | 14 ++++++++++++-- + src/archive/tar/reader_test.go | 8 +++++++- + src/archive/tar/writer.go | 3 +++ + src/archive/tar/writer_test.go | 27 +++++++++++++++++++++++++++ + 5 files changed, 53 insertions(+), 3 deletions(-) + +diff --git a/src/archive/tar/format.go b/src/archive/tar/format.go +index cfe24a5..6642364 100644 +--- a/src/archive/tar/format.go ++++ b/src/archive/tar/format.go +@@ -143,6 +143,10 @@ const ( + blockSize = 512 // Size of each block in a tar stream + nameSize = 100 // Max length of the name field in USTAR format + prefixSize = 155 // Max length of the prefix field in USTAR format ++ ++ // Max length of a special file (PAX header, GNU long name or link). ++ // This matches the limit used by libarchive. ++ maxSpecialFileSize = 1 << 20 + ) + + // blockPadding computes the number of bytes needed to pad offset up to the +diff --git a/src/archive/tar/reader.go b/src/archive/tar/reader.go +index 1b1d5b4..f645af8 100644 +--- a/src/archive/tar/reader.go ++++ b/src/archive/tar/reader.go +@@ -103,7 +103,7 @@ func (tr *Reader) next() (*Header, error) { + continue // This is a meta header affecting the next header + case TypeGNULongName, TypeGNULongLink: + format.mayOnlyBe(FormatGNU) +- realname, err := io.ReadAll(tr) ++ realname, err := readSpecialFile(tr) + if err != nil { + return nil, err + } +@@ -293,7 +293,7 @@ func mergePAX(hdr *Header, paxHdrs map[string]string) (err error) { + // parsePAX parses PAX headers. + // If an extended header (type 'x') is invalid, ErrHeader is returned + func parsePAX(r io.Reader) (map[string]string, error) { +- buf, err := io.ReadAll(r) ++ buf, err := readSpecialFile(r) + if err != nil { + return nil, err + } +@@ -826,6 +826,16 @@ func tryReadFull(r io.Reader, b []byte) (n int, err error) { + return n, err + } + ++// readSpecialFile is like io.ReadAll except it returns ++// ErrFieldTooLong if more than maxSpecialFileSize is read. ++func readSpecialFile(r io.Reader) ([]byte, error) { ++ buf, err := io.ReadAll(io.LimitReader(r, maxSpecialFileSize+1)) ++ if len(buf) > maxSpecialFileSize { ++ return nil, ErrFieldTooLong ++ } ++ return buf, err ++} ++ + // discard skips n bytes in r, reporting an error if unable to do so. + func discard(r io.Reader, n int64) error { + // If possible, Seek to the last byte before the end of the data section. +diff --git a/src/archive/tar/reader_test.go b/src/archive/tar/reader_test.go +index 789ddc1..926dc3d 100644 +--- a/src/archive/tar/reader_test.go ++++ b/src/archive/tar/reader_test.go +@@ -6,6 +6,7 @@ package tar + + import ( + "bytes" ++ "compress/bzip2" + "crypto/md5" + "errors" + "fmt" +@@ -625,9 +626,14 @@ func TestReader(t *testing.T) { + } + defer f.Close() + ++ var fr io.Reader = f ++ if strings.HasSuffix(v.file, ".bz2") { ++ fr = bzip2.NewReader(fr) ++ } ++ + // Capture all headers and checksums. + var ( +- tr = NewReader(f) ++ tr = NewReader(fr) + hdrs []*Header + chksums []string + rdbuf = make([]byte, 8) +diff --git a/src/archive/tar/writer.go b/src/archive/tar/writer.go +index e80498d..893eac0 100644 +--- a/src/archive/tar/writer.go ++++ b/src/archive/tar/writer.go +@@ -199,6 +199,9 @@ func (tw *Writer) writePAXHeader(hdr *Header, paxHdrs map[string]string) error { + flag = TypeXHeader + } + data := buf.String() ++ if len(data) > maxSpecialFileSize { ++ return ErrFieldTooLong ++ } + if err := tw.writeRawFile(name, data, flag, FormatPAX); err != nil || isGlobal { + return err // Global headers return here + } +diff --git a/src/archive/tar/writer_test.go b/src/archive/tar/writer_test.go +index a00f02d..4e709e5 100644 +--- a/src/archive/tar/writer_test.go ++++ b/src/archive/tar/writer_test.go +@@ -1006,6 +1006,33 @@ func TestIssue12594(t *testing.T) { + } + } + ++func TestWriteLongHeader(t *testing.T) { ++ for _, test := range []struct { ++ name string ++ h *Header ++ }{{ ++ name: "name too long", ++ h: &Header{Name: strings.Repeat("a", maxSpecialFileSize)}, ++ }, { ++ name: "linkname too long", ++ h: &Header{Linkname: strings.Repeat("a", maxSpecialFileSize)}, ++ }, { ++ name: "uname too long", ++ h: &Header{Uname: strings.Repeat("a", maxSpecialFileSize)}, ++ }, { ++ name: "gname too long", ++ h: &Header{Gname: strings.Repeat("a", maxSpecialFileSize)}, ++ }, { ++ name: "PAX header too long", ++ h: &Header{PAXRecords: map[string]string{"GOLANG.x": strings.Repeat("a", maxSpecialFileSize)}}, ++ }} { ++ w := NewWriter(io.Discard) ++ if err := w.WriteHeader(test.h); err != ErrFieldTooLong { ++ t.Errorf("%v: w.WriteHeader() = %v, want ErrFieldTooLong", test.name, err) ++ } ++ } ++} ++ + // testNonEmptyWriter wraps an io.Writer and ensures that + // Write is never called with an empty buffer. + type testNonEmptyWriter struct{ io.Writer } |