| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "errors" |
| 5 | "os" |
| 6 | "path/filepath" |
| 7 | "testing" |
| 8 | |
| 9 | "github.com/carlosframework/platform/internal/release" |
| 10 | ) |
| 11 | |
| 12 | func TestPlan14PointerHistoryRootAndAgentTampering(t *testing.T) { |
| 13 | for _, attack := range []string{"delete", "rename", "empty", "directory"} { |
| 14 | t.Run(attack, func(t *testing.T) { |
| 15 | opt, data := t.TempDir(), t.TempDir() |
| 16 | p := &release.ChannelPointer{App: "console", Channel: "stable", Version: "v1", Digest: release.ManifestDigest([]byte("manifest"))} |
| 17 | if err := pointerRatchet(true, opt, data, func(string) string { return "" }).Admit("bab", p); err != nil { |
| 18 | t.Fatal(err) |
| 19 | } |
| 20 | root, agent := release.RootRatchetDir(opt), release.EdgeRatchetDir(data) |
| 21 | if err := release.NewDigestRatchet(agent, []string{root}, false).Admit("bab", p); err != nil { |
| 22 | t.Fatal(err) |
| 23 | } |
| 24 | mark := filepath.Join(agent, "bab", "console", "stable.digests") |
| 25 | switch attack { |
| 26 | case "delete": |
| 27 | if err := os.Remove(mark); err != nil { |
| 28 | t.Fatal(err) |
| 29 | } |
| 30 | case "rename": |
| 31 | if err := os.Rename(mark, mark+".old"); err != nil { |
| 32 | t.Fatal(err) |
| 33 | } |
| 34 | case "empty": |
| 35 | if err := os.WriteFile(mark, nil, 0600); err != nil { |
| 36 | t.Fatal(err) |
| 37 | } |
| 38 | case "directory": |
| 39 | if err := os.Remove(mark); err != nil { |
| 40 | t.Fatal(err) |
| 41 | } |
| 42 | if err := os.Mkdir(mark, 0700); err != nil { |
| 43 | t.Fatal(err) |
| 44 | } |
| 45 | } |
| 46 | legacy := &release.ChannelPointer{App: p.App, Channel: p.Channel, Version: p.Version} |
| 47 | for _, reader := range []*release.DigestRatchet{release.NewDigestRatchet(root, []string{agent}, false), release.NewDigestRatchet(agent, []string{root}, false)} { |
| 48 | if err := reader.Admit("bab", legacy); !errors.Is(err, release.ErrPointerWithoutDigests) { |
| 49 | t.Fatalf("tampering admitted digestless pointer: %v", err) |
| 50 | } |
| 51 | } |
| 52 | if err := release.NewDigestRatchet(root, []string{agent}, false).Admit("bab", p); err != nil { |
| 53 | t.Fatalf("signed digest pointer refused: %v", err) |
| 54 | } |
| 55 | }) |
| 56 | } |
| 57 | root, agent := t.TempDir(), t.TempDir() |
| 58 | mark := filepath.Join(agent, "bab", "console", "stable.digests") |
| 59 | if err := os.MkdirAll(mark, 0700); err != nil { |
| 60 | t.Fatal(err) |
| 61 | } |
| 62 | if err := release.NewDigestRatchet(root, []string{agent}, false).Admit("bab", &release.ChannelPointer{App: "console", Channel: "stable", Version: "v1"}); !errors.Is(err, release.ErrPointerWithoutDigests) { |
| 63 | t.Fatalf("malformed additional deny failed open: %v", err) |
| 64 | } |
| 65 | } |
| 66 | |
amadan