diff options
Diffstat (limited to 'meta/recipes-devtools/go/go-1.14/CVE-2021-41771.patch')
| -rw-r--r-- | meta/recipes-devtools/go/go-1.14/CVE-2021-41771.patch | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/meta/recipes-devtools/go/go-1.14/CVE-2021-41771.patch b/meta/recipes-devtools/go/go-1.14/CVE-2021-41771.patch new file mode 100644 index 0000000000..526796dbcb --- /dev/null +++ b/meta/recipes-devtools/go/go-1.14/CVE-2021-41771.patch @@ -0,0 +1,86 @@ +From d19c5bdb24e093a2d5097b7623284eb02726cede Mon Sep 17 00:00:00 2001 +From: Roland Shoemaker <roland@golang.org> +Date: Thu, 14 Oct 2021 13:02:01 -0700 +Subject: [PATCH] [release-branch.go1.16] debug/macho: fail on invalid dynamic + symbol table command +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Fail out when loading a file that contains a dynamic symbol table +command that indicates a larger number of symbols than exist in the +loaded symbol table. + +Thanks to Burak Çarıkçı - Yunus Yıldırım (CT-Zer0 Crypttech) for +reporting this issue. + +Updates #48990 +Fixes #48991 +Fixes CVE-2021-41771 + +Change-Id: Ic3d6e6529241afcc959544b326b21b663262bad5 +Reviewed-on: https://go-review.googlesource.com/c/go/+/355990 +Reviewed-by: Julie Qiu <julie@golang.org> +Reviewed-by: Katie Hockman <katie@golang.org> +Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com> +Run-TryBot: Roland Shoemaker <roland@golang.org> +TryBot-Result: Go Bot <gobot@golang.org> +Trust: Katie Hockman <katie@golang.org> +(cherry picked from commit 61536ec03063b4951163bd09609c86d82631fa27) +Reviewed-on: https://go-review.googlesource.com/c/go/+/359454 +Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> + +https://github.com/golang/go/commit/d19c5bdb24e093a2d5097b7623284eb02726cede +CVE: CVE-2021-41771 +Upstream-Status: Backport +Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> +--- + src/debug/macho/file.go | 9 +++++++++ + src/debug/macho/file_test.go | 7 +++++++ + .../testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64 | 1 + + 3 files changed, 17 insertions(+) + create mode 100644 src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64 + +diff --git a/src/debug/macho/file.go b/src/debug/macho/file.go +index 085b0c8219bad..73cfce3c7606e 100644 +--- a/src/debug/macho/file.go ++++ b/src/debug/macho/file.go +@@ -345,6 +345,15 @@ func NewFile(r io.ReaderAt) (*File, error) { + if err := binary.Read(b, bo, &hdr); err != nil { + return nil, err + } ++ if hdr.Iundefsym > uint32(len(f.Symtab.Syms)) { ++ return nil, &FormatError{offset, fmt.Sprintf( ++ "undefined symbols index in dynamic symbol table command is greater than symbol table length (%d > %d)", ++ hdr.Iundefsym, len(f.Symtab.Syms)), nil} ++ } else if hdr.Iundefsym+hdr.Nundefsym > uint32(len(f.Symtab.Syms)) { ++ return nil, &FormatError{offset, fmt.Sprintf( ++ "number of undefined symbols after index in dynamic symbol table command is greater than symbol table length (%d > %d)", ++ hdr.Iundefsym+hdr.Nundefsym, len(f.Symtab.Syms)), nil} ++ } + dat := make([]byte, hdr.Nindirectsyms*4) + if _, err := r.ReadAt(dat, int64(hdr.Indirectsymoff)); err != nil { + return nil, err +diff --git a/src/debug/macho/file_test.go b/src/debug/macho/file_test.go +index 03915c86e23d9..9beeb80dd27c1 100644 +--- a/src/debug/macho/file_test.go ++++ b/src/debug/macho/file_test.go +@@ -416,3 +416,10 @@ func TestTypeString(t *testing.T) { + t.Errorf("got %v, want %v", TypeExec.GoString(), "macho.Exec") + } + } ++ ++func TestOpenBadDysymCmd(t *testing.T) { ++ _, err := openObscured("testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64") ++ if err == nil { ++ t.Fatal("openObscured did not fail when opening a file with an invalid dynamic symbol table command") ++ } ++} +diff --git a/src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64 b/src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64 +new file mode 100644 +index 0000000000000..8e0436639c109 +--- /dev/null ++++ b/src/debug/macho/testdata/gcc-amd64-darwin-exec-with-bad-dysym.base64 +@@ -0,0 +1 @@ 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+\ No newline at end of file |