feat: support scientific linux (#3175)

Adds support for Scientific Linux as an alias to the RHEL vulnerability
data.

Signed-off-by: Weston Steimel <author@code.w.steimel.me.uk>

Author: westonsteimel

grype/db/v6/data.go

@@ -18,6 +18,8 @@ func KnownOperatingSystemSpecifierOverrides() []OperatingSystemSpecifierOverride
 		{Alias: "rockylinux", ReplacementName: strRef("rhel")}, // non-standard, but common (dockerhub uses "rockylinux")
 		{Alias: "alma", ReplacementName: strRef("rhel")},
 		{Alias: "almalinux", ReplacementName: strRef("rhel")}, // non-standard, but common (dockerhub uses "almalinux")
+		{Alias: "scientific", ReplacementName: strRef("rhel")},
+		{Alias: "sl", ReplacementName: strRef("rhel")}, // non-standard, but common (dockerhub uses "sl")
 		{Alias: "gentoo", ReplacementName: strRef("rhel")},
 
 		// Alternaitve distros that should match against the debian vulnerability data

grype/distro/distro_test.go

@@ -370,7 +370,7 @@ func Test_NewDistroFromRelease_Coverage(t *testing.T) {
 		},
 		{
 			Name:    "test-fixtures/os/custom",
-			Type:    RedHat,
+			Type:    Scientific,
 			Version: "8",
 		},
 		{
@@ -461,6 +461,16 @@ func Test_NewDistroFromRelease_Coverage(t *testing.T) {
 			Type:    Raspbian,
 			Version: "9",
 		},
+		{
+			Name:    "test-fixtures/os/scientific",
+			Type:    Scientific,
+			Version: "7.5",
+		},
+		{
+			Name:    "test-fixtures/os/scientific6",
+			Type:    Scientific,
+			Version: "6.10",
+		},
 	}
 
 	for _, tt := range tests {

grype/distro/test-fixtures/os/scientific/etc/os-release

@@ -0,0 +1,15 @@
+NAME="Scientific Linux"
+VERSION="7.5 (Nitrogen)"
+ID="scientific"
+ID_LIKE="rhel centos fedora"
+VERSION_ID="7.5"
+PRETTY_NAME="Scientific Linux 7.5 (Nitrogen)"
+ANSI_COLOR="0;31"
+CPE_NAME="cpe:/o:scientificlinux:scientificlinux:7.5:GA"
+HOME_URL="http://www.scientificlinux.org//"
+BUG_REPORT_URL="mailto:scientific-linux-devel@listserv.fnal.gov"
+
+REDHAT_BUGZILLA_PRODUCT="Scientific Linux 7"
+REDHAT_BUGZILLA_PRODUCT_VERSION=7.5
+REDHAT_SUPPORT_PRODUCT="Scientific Linux"
+REDHAT_SUPPORT_PRODUCT_VERSION="7.5"

grype/distro/test-fixtures/os/scientific6/etc/redhat-release

@@ -0,0 +1 @@
+Scientific Linux release 6.10 (Carbon)

grype/distro/type.go

@@ -34,6 +34,7 @@ const (
 	Chainguard   Type = "chainguard"
 	MinimOS      Type = "minimos"
 	Raspbian     Type = "raspbian"
+	Scientific   Type = "scientific"
 )
 
 // All contains all Linux distribution options
@@ -62,6 +63,7 @@ var All = []Type{
 	Chainguard,
 	MinimOS,
 	Raspbian,
+	Scientific,
 }
 
 // IDMapping maps a distro ID from the /etc/os-release (e.g. like "ubuntu") to a Distro type.
@@ -89,12 +91,14 @@ var IDMapping = map[string]Type{
 	"chainguard":    Chainguard,
 	"minimos":       MinimOS,
 	"raspbian":      Raspbian,
+	"scientific":    Scientific,
 }
 
 // aliasTypes maps common aliases to their corresponding Type.
 var aliasTypes = map[string]Type{
-	"Alpine Linux": Alpine, // needed for CPE matching (see #2039)
-	"windows":      Windows,
+	"Alpine Linux":     Alpine, // needed for CPE matching (see #2039)
+	"windows":          Windows,
+	"scientific linux": Scientific, // Scientific linux prior to v7 didn't have an os-release file and syft raises up "scientific linux" as the release id as parsed from /etc/redhat-release
 }
 
 var typeToIDMapping = map[Type]string{}

grype/distro/type_test.go

@@ -116,6 +116,17 @@ func TestTypeFromRelease(t *testing.T) {
 			},
 			want: Alpine,
 		},
+		{
+			name: "Scientific Linux 6",
+			release: linux.Release{
+				Name:      "Scientific Linux",
+				ID:        "scientific linux",
+				IDLike:    []string{"scientific linux"},
+				Version:   "6.10 Carbon",
+				VersionID: "6.10",
+			},
+			want: Scientific,
+		},
 	}
 
 	for _, tt := range tests {