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fix: resolve critical security vulnerabilities in debug logging and command execution

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- Remove sensitive data from debug logs (vault/secrets.go, secret/version.go)
- Add input validation for GPG key IDs and keychain item names
- Resolve GPG key IDs to full fingerprints before storing in metadata
- Add comprehensive test coverage for validation functions
- Add golangci-lint configuration with additional linters

Security improvements:
- Debug logs no longer expose decrypted secret values or private keys
- GPG and keychain commands now validate input to prevent injection attacks
- All validation uses precompiled regex patterns for performance
This commit is contained in:
sneak
2025-06-20 07:50:26 -07:00
parent 004dce5472
commit 985d79d3c0
8 changed files with 529 additions and 28 deletions
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internal/secret/validation_test.go
+297
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@@ -0,0 +1,297 @@
package secret
import (
"testing"
)
func TestValidateGPGKeyID(t *testing.T) {
tests := []struct {
name string
keyID string
wantErr bool
}{
// Valid cases
{
name: "valid email address",
keyID: "test@example.com",
wantErr: false,
},
{
name: "valid email with dots and hyphens",
keyID: "test.user-name@example-domain.co.uk",
wantErr: false,
},
{
name: "valid email with plus",
keyID: "test+tag@example.com",
wantErr: false,
},
{
name: "valid short key ID (8 hex chars)",
keyID: "ABCDEF12",
wantErr: false,
},
{
name: "valid long key ID (16 hex chars)",
keyID: "ABCDEF1234567890",
wantErr: false,
},
{
name: "valid fingerprint (40 hex chars)",
keyID: "ABCDEF1234567890ABCDEF1234567890ABCDEF12",
wantErr: false,
},
{
name: "valid lowercase hex fingerprint",
keyID: "abcdef1234567890abcdef1234567890abcdef12",
wantErr: false,
},
{
name: "valid mixed case hex",
keyID: "AbCdEf1234567890",
wantErr: false,
},
// Invalid cases
{
name: "empty key ID",
keyID: "",
wantErr: true,
},
{
name: "key ID with spaces",
keyID: "test user@example.com",
wantErr: true,
},
{
name: "key ID with semicolon (command injection)",
keyID: "test@example.com; rm -rf /",
wantErr: true,
},
{
name: "key ID with pipe (command injection)",
keyID: "test@example.com | cat /etc/passwd",
wantErr: true,
},
{
name: "key ID with backticks (command injection)",
keyID: "test@example.com`whoami`",
wantErr: true,
},
{
name: "key ID with dollar sign (command injection)",
keyID: "test@example.com$(whoami)",
wantErr: true,
},
{
name: "key ID with quotes",
keyID: "test\"@example.com",
wantErr: true,
},
{
name: "key ID with single quotes",
keyID: "test'@example.com",
wantErr: true,
},
{
name: "key ID with backslash",
keyID: "test\\@example.com",
wantErr: true,
},
{
name: "key ID with newline",
keyID: "test@example.com\nrm -rf /",
wantErr: true,
},
{
name: "key ID with carriage return",
keyID: "test@example.com\rrm -rf /",
wantErr: true,
},
{
name: "hex with invalid length (7 chars)",
keyID: "ABCDEF1",
wantErr: true,
},
{
name: "hex with invalid length (9 chars)",
keyID: "ABCDEF123",
wantErr: true,
},
{
name: "hex with non-hex characters",
keyID: "ABCDEFGH",
wantErr: true,
},
{
name: "mixed format (email with hex)",
keyID: "test@ABCDEF12",
wantErr: true,
},
{
name: "key ID with ampersand",
keyID: "test@example.com & echo test",
wantErr: true,
},
{
name: "key ID with redirect",
keyID: "test@example.com > /tmp/test",
wantErr: true,
},
{
name: "key ID with null byte",
keyID: "test@example.com\x00",
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
err := validateGPGKeyID(tt.keyID)
if (err != nil) != tt.wantErr {
t.Errorf("validateGPGKeyID() error = %v, wantErr %v", err, tt.wantErr)
}
})
}
}
func TestValidateKeychainItemName(t *testing.T) {
tests := []struct {
name string
itemName string
wantErr bool
}{
// Valid cases
{
name: "valid simple name",
itemName: "my-secret-key",
wantErr: false,
},
{
name: "valid name with dots",
itemName: "com.example.app.key",
wantErr: false,
},
{
name: "valid name with underscores",
itemName: "my_secret_key_123",
wantErr: false,
},
{
name: "valid alphanumeric",
itemName: "Secret123Key",
wantErr: false,
},
{
name: "valid with hyphen at start",
itemName: "-my-key",
wantErr: false,
},
{
name: "valid with dot at start",
itemName: ".hidden-key",
wantErr: false,
},
// Invalid cases
{
name: "empty item name",
itemName: "",
wantErr: true,
},
{
name: "item name with spaces",
itemName: "my secret key",
wantErr: true,
},
{
name: "item name with semicolon",
itemName: "key;rm -rf /",
wantErr: true,
},
{
name: "item name with pipe",
itemName: "key|cat /etc/passwd",
wantErr: true,
},
{
name: "item name with backticks",
itemName: "key`whoami`",
wantErr: true,
},
{
name: "item name with dollar sign",
itemName: "key$(whoami)",
wantErr: true,
},
{
name: "item name with quotes",
itemName: "key\"name",
wantErr: true,
},
{
name: "item name with single quotes",
itemName: "key'name",
wantErr: true,
},
{
name: "item name with backslash",
itemName: "key\\name",
wantErr: true,
},
{
name: "item name with newline",
itemName: "key\nname",
wantErr: true,
},
{
name: "item name with carriage return",
itemName: "key\rname",
wantErr: true,
},
{
name: "item name with ampersand",
itemName: "key&echo test",
wantErr: true,
},
{
name: "item name with redirect",
itemName: "key>/tmp/test",
wantErr: true,
},
{
name: "item name with null byte",
itemName: "key\x00name",
wantErr: true,
},
{
name: "item name with parentheses",
itemName: "key(test)",
wantErr: true,
},
{
name: "item name with brackets",
itemName: "key[test]",
wantErr: true,
},
{
name: "item name with asterisk",
itemName: "key*",
wantErr: true,
},
{
name: "item name with question mark",
itemName: "key?",
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
err := validateKeychainItemName(tt.itemName)
if (err != nil) != tt.wantErr {
t.Errorf("validateKeychainItemName() error = %v, wantErr %v", err, tt.wantErr)
}
})
}
}