Merge commit from fork

🔒 Prevent runaway memory use when parsing `uid-set` (v0.3 backport)

Author: nevans

lib/net/imap/response_parser.rb

@@ -7,6 +7,8 @@ class IMAP < Protocol
 
     # Parses an \IMAP server response.
     class ResponseParser
+      MAX_UID_SET_SIZE = 10_000
+
       # :call-seq: Net::IMAP::ResponseParser.new -> Net::IMAP::ResponseParser
       def initialize
         @str = nil
@@ -1379,11 +1381,29 @@ def uid_set
         case token.symbol
         when T_NUMBER then [Integer(token.value)]
         when T_ATOM
-          token.value.split(",").flat_map {|range|
-            range = range.split(":").map {|uniqueid| Integer(uniqueid) }
-            range.size == 1 ? range : Range.new(range.min, range.max).to_a
+          entries = uid_set__ranges(token.value)
+          if (count = entries.sum(&:count)) > MAX_UID_SET_SIZE
+            parse_error("uid-set is too large: %d > 10k", count)
+          end
+          entries.flat_map(&:to_a)
+        end
+      end
+
+      # returns an array of ranges
+      def uid_set__ranges(uidset)
+        entries = []
+        uidset.split(",") do |entry|
+          uids = entry.split(":", 2).map {|uid|
+            unless uid =~ /\A[1-9][0-9]*\z/
+              parse_error("invalid uid-set uid: %p", uid)
+            end
+            uid = Integer(uid)
+            NumValidator.ensure_nz_number(uid)
+            uid
           }
+          entries << Range.new(*uids.minmax)
         end
+        entries
       end
 
       def nil_atom

test/net/fixtures/Makefile

@@ -5,11 +5,11 @@ regen_certs:
 	make server.crt
 
 cacert.pem: server.key
-	openssl req -new -x509 -days 1825 -key server.key -out cacert.pem -text -subj "/C=JP/ST=Shimane/L=Matz-e city/O=Ruby Core Team/CN=Ruby Test CA/emailAddress=security@ruby-lang.org"
+	openssl req -new -x509 -days 3650 -key server.key -out cacert.pem -subj "/C=JP/ST=Shimane/L=Matz-e city/O=Ruby Core Team/CN=Ruby Test CA/emailAddress=security@ruby-lang.org"
 
 server.csr:
-	openssl req -new -key server.key -out server.csr -text -subj "/C=JP/ST=Shimane/O=Ruby Core Team/OU=Ruby Test/CN=localhost"
+	openssl req -new -key server.key -out server.csr -subj "/C=JP/ST=Shimane/O=Ruby Core Team/OU=Ruby Test/CN=localhost"
 
 server.crt: server.csr cacert.pem
-	openssl x509 -days 1825 -CA cacert.pem -CAkey server.key -set_serial 00 -in server.csr -req -text -out server.crt
+	openssl x509 -days 3650 -CA cacert.pem -CAkey server.key -set_serial 00 -in server.csr -req -out server.crt
 	rm server.csr

test/net/fixtures/cacert.pem

@@ -1,24 +1,24 @@
 -----BEGIN CERTIFICATE-----
-MIID7TCCAtWgAwIBAgIJAIltvxrFAuSnMA0GCSqGSIb3DQEBCwUAMIGMMQswCQYD
-VQQGEwJKUDEQMA4GA1UECAwHU2hpbWFuZTEUMBIGA1UEBwwLTWF0ei1lIGNpdHkx
-FzAVBgNVBAoMDlJ1YnkgQ29yZSBUZWFtMRUwEwYDVQQDDAxSdWJ5IFRlc3QgQ0Ex
-JTAjBgkqhkiG9w0BCQEWFnNlY3VyaXR5QHJ1YnktbGFuZy5vcmcwHhcNMTkwMTAy
-MDI1ODI4WhcNMjQwMTAxMDI1ODI4WjCBjDELMAkGA1UEBhMCSlAxEDAOBgNVBAgM
-B1NoaW1hbmUxFDASBgNVBAcMC01hdHotZSBjaXR5MRcwFQYDVQQKDA5SdWJ5IENv
-cmUgVGVhbTEVMBMGA1UEAwwMUnVieSBUZXN0IENBMSUwIwYJKoZIhvcNAQkBFhZz
-ZWN1cml0eUBydWJ5LWxhbmcub3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIB
-CgKCAQEAznlbjRVhz1NlutHVrhcGnK8W0qug2ujKXv1njSC4U6nJF6py7I9EeehV
-SaKePyv+I9z3K1LnfUHOtUbdwdKC77yN66A6q2aqzu5q09/NSykcZGOIF0GuItYI
-3nvW3IqBddff2ffsyR+9pBjfb5AIPP08WowF9q4s1eGULwZc4w2B8PFhtxYANd7d
-BvGLXFlcufv9tDtzyRi4t7eqxCRJkZQIZNZ6DHHIJrNxejOILfHLarI12yk8VK6L
-2LG4WgGqyeePiRyd1o1MbuiAFYqAwpXNUbRKg5NaZGwBHZk8UZ+uFKt1QMBURO5R
-WFy1c349jbWszTqFyL4Lnbg9HhAowQIDAQABo1AwTjAdBgNVHQ4EFgQU9tEiKdU9
-I9derQyc5nWPnc34nVMwHwYDVR0jBBgwFoAU9tEiKdU9I9derQyc5nWPnc34nVMw
-DAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAxj7F/u3C3fgq24N7hGRA
-of7ClFQxGmo/IGT0AISzW3HiVYiFaikKhbO1NwD9aBpD8Zwe62sCqMh8jGV/b0+q
-aOORnWYNy2R6r9FkASAglmdF6xn3bhgGD5ls4pCvcG9FynGnGc24g6MrjFNrBYUS
-2iIZsg36i0IJswo/Dy6HLphCms2BMCD3DeWtfjePUiTmQHJo6HsQIKP/u4N4Fvee
-uMBInei2M4VU74fLXbmKl1F9AEX7JDP3BKSZG19Ch5pnUo4uXM1uNTGsi07P4Y0s
-K44+SKBC0bYEFbDK0eQWMrX3kIhkPxyIWhxdq9/NqPYjShuSEAhA6CSpmRg0pqc+
-mA==
+MIID+zCCAuOgAwIBAgIUGMvHl3EhtKPKcgc3NQSAYfFuC+8wDQYJKoZIhvcNAQEL
+BQAwgYwxCzAJBgNVBAYTAkpQMRAwDgYDVQQIDAdTaGltYW5lMRQwEgYDVQQHDAtN
+YXR6LWUgY2l0eTEXMBUGA1UECgwOUnVieSBDb3JlIFRlYW0xFTATBgNVBAMMDFJ1
+YnkgVGVzdCBDQTElMCMGCSqGSIb3DQEJARYWc2VjdXJpdHlAcnVieS1sYW5nLm9y
+ZzAeFw0yNDAxMDExMTQ3MjNaFw0zMzEyMjkxMTQ3MjNaMIGMMQswCQYDVQQGEwJK
+UDEQMA4GA1UECAwHU2hpbWFuZTEUMBIGA1UEBwwLTWF0ei1lIGNpdHkxFzAVBgNV
+BAoMDlJ1YnkgQ29yZSBUZWFtMRUwEwYDVQQDDAxSdWJ5IFRlc3QgQ0ExJTAjBgkq
+hkiG9w0BCQEWFnNlY3VyaXR5QHJ1YnktbGFuZy5vcmcwggEiMA0GCSqGSIb3DQEB
+AQUAA4IBDwAwggEKAoIBAQCw+egZQ6eumJKq3hfKfED4dE/tL4FI5sjqont9ABVI
++1GSqyi1bFBgsRjM0THllIdMbKmJtWwnKW8J+5OgNN8y6Xxv8JmM/Y5vQt2lis0f
+qXmG8UTz0VTWdlAXXmhUs6lSADvAaIe4RVrCsZ97L3ZQTryY7JRVcbB4khUN3Gp0
+yg+801SXzoFTTa+UGIRLE66jH51aa5VXu99hnv1OiH8tQrjdi8mH6uG/icq4XuIe
+NWMF32wHqIOOPvQcWV3M5D2vxJEj702Ku6k9OQXkAo17qRSEonWW4HtLbtmS8He1
+JNPc/n3dVUm+fM6NoDXPoLP7j55G9zKyqGtGAWXAj1MTAgMBAAGjUzBRMB0GA1Ud
+DgQWBBSJGVleDvFp9cu9R+E0/OKYzGkwkTAfBgNVHSMEGDAWgBSJGVleDvFp9cu9
+R+E0/OKYzGkwkTAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBCwUAA4IBAQBl
+8GLB8skAWlkSw/FwbUmEV3zyqu+p7PNP5YIYoZs0D74e7yVulGQ6PKMZH5hrZmHo
+orFSQU+VUUirG8nDGj7Rzce8WeWBxsaDGC8CE2dq6nC6LuUwtbdMnBrH0LRWAz48
+jGFF3jHtVz8VsGfoZTZCjukWqNXvU6hETT9GsfU+PZqbqcTVRPH52+XgYayKdIbD
+r97RM4X3+aXBHcUW0b76eyyi65RR/Xtvn8ioZt2AdX7T2tZzJyXJN3Hupp77s6Ui
+AZR35SToHCZeTZD12YBvLBdaTPLZN7O/Q/aAO9ZiJaZ7SbFOjz813B2hxXab4Fob
+2uJX6eMWTVxYK5D4M9lm
 -----END CERTIFICATE-----

test/net/fixtures/server.crt

@@ -1,82 +1,21 @@
-Certificate:
-    Data:
-        Version: 3 (0x2)
-        Serial Number: 2 (0x2)
-    Signature Algorithm: sha256WithRSAEncryption
-        Issuer: C=JP, ST=Shimane, L=Matz-e city, O=Ruby Core Team, CN=Ruby Test CA/emailAddress=security@ruby-lang.org
-        Validity
-            Not Before: Jan  2 03:27:13 2019 GMT
-            Not After : Jan  1 03:27:13 2024 GMT
-        Subject: C=JP, ST=Shimane, O=Ruby Core Team, OU=Ruby Test, CN=localhost
-        Subject Public Key Info:
-            Public Key Algorithm: rsaEncryption
-                Public-Key: (2048 bit)
-                Modulus:
-                    00:e8:da:9c:01:2e:2b:10:ec:49:cd:5e:07:13:07:
-                    9c:70:9e:c6:74:bc:13:c2:e1:6f:c6:82:fd:e3:48:
-                    e0:2c:a5:68:c7:9e:42:de:60:54:65:e6:6a:14:57:
-                    7a:30:d0:cc:b5:b6:d9:c3:d2:df:c9:25:97:54:67:
-                    cf:f6:be:5e:cb:8b:ee:03:c5:e1:e2:f9:e7:f7:d1:
-                    0c:47:f0:b8:da:33:5a:ad:41:ad:e7:b5:a2:7b:b7:
-                    bf:30:da:60:f8:e3:54:a2:bc:3a:fd:1b:74:d9:dc:
-                    74:42:e9:29:be:df:ac:b4:4f:eb:32:f4:06:f1:e1:
-                    8c:4b:a8:8b:fb:29:e7:b1:bf:1d:01:ee:73:0f:f9:
-                    40:dc:d5:15:79:d9:c6:73:d0:c0:dd:cb:e4:da:19:
-                    47:80:c6:14:04:72:fd:9a:7c:8f:11:82:76:49:04:
-                    79:cc:f2:5c:31:22:95:13:3e:5d:40:a6:4d:e0:a3:
-                    02:26:7d:52:3b:bb:ed:65:a1:0f:ed:6b:b0:3c:d4:
-                    de:61:15:5e:d3:dd:68:09:9f:4a:57:a5:c2:a9:6d:
-                    86:92:c5:f4:a4:d4:b7:13:3b:52:63:24:05:e2:cc:
-                    e3:8a:3c:d4:35:34:2b:10:bb:58:72:e7:e1:8d:1d:
-                    74:8c:61:16:20:3d:d0:1c:4e:8f:6e:fd:fe:64:10:
-                    4f:41
-                Exponent: 65537 (0x10001)
-        X509v3 extensions:
-            X509v3 Basic Constraints: 
-                CA:FALSE
-            Netscape Comment: 
-                OpenSSL Generated Certificate
-            X509v3 Subject Key Identifier: 
-                ED:28:C2:7E:AB:4B:C8:E8:FE:55:6D:66:95:31:1C:2D:60:F9:02:36
-            X509v3 Authority Key Identifier: 
-                keyid:F6:D1:22:29:D5:3D:23:D7:5E:AD:0C:9C:E6:75:8F:9D:CD:F8:9D:53
-
-    Signature Algorithm: sha256WithRSAEncryption
-         1d:b8:c5:8b:72:41:20:65:ad:27:6f:15:63:06:26:12:8d:9c:
-         ad:ca:f4:db:97:b4:90:cb:ff:35:94:bb:2a:a7:a1:ab:1e:35:
-         2d:a5:3f:c9:24:b0:1a:58:89:75:3e:81:0a:2c:4f:98:f9:51:
-         fb:c0:a3:09:d0:0a:9b:e7:a2:b7:c3:60:40:c8:f4:6d:b2:6a:
-         56:12:17:4c:00:24:31:df:9c:60:ae:b1:68:54:a9:e6:b5:4a:
-         04:e6:92:05:86:d9:5a:dc:96:30:a5:58:de:14:99:0f:e5:15:
-         89:3e:9b:eb:80:e3:bd:83:c3:ea:33:35:4b:3e:2f:d3:0d:64:
-         93:67:7f:8d:f5:3f:0c:27:bc:37:5a:cc:d6:47:16:af:5a:62:
-         d2:da:51:f8:74:06:6b:24:ad:28:68:08:98:37:7d:ed:0e:ab:
-         1e:82:61:05:d0:ba:75:a0:ab:21:b0:9a:fd:2b:54:86:1d:0d:
-         1f:c2:d4:77:1f:72:26:5e:ad:8a:9f:09:36:6d:44:be:74:c2:
-         5a:3e:ff:5c:9d:75:d6:38:7b:c5:39:f9:44:6e:a1:d1:8e:ff:
-         63:db:c4:bb:c6:91:92:ca:5c:60:9b:1d:eb:0a:de:08:ee:bf:
-         da:76:03:65:62:29:8b:f8:7f:c7:86:73:1e:f6:1f:2d:89:69:
-         fd:be:bd:6e
 -----BEGIN CERTIFICATE-----
-MIID4zCCAsugAwIBAgIBAjANBgkqhkiG9w0BAQsFADCBjDELMAkGA1UEBhMCSlAx
-EDAOBgNVBAgMB1NoaW1hbmUxFDASBgNVBAcMC01hdHotZSBjaXR5MRcwFQYDVQQK
-DA5SdWJ5IENvcmUgVGVhbTEVMBMGA1UEAwwMUnVieSBUZXN0IENBMSUwIwYJKoZI
-hvcNAQkBFhZzZWN1cml0eUBydWJ5LWxhbmcub3JnMB4XDTE5MDEwMjAzMjcxM1oX
-DTI0MDEwMTAzMjcxM1owYDELMAkGA1UEBhMCSlAxEDAOBgNVBAgMB1NoaW1hbmUx
-FzAVBgNVBAoMDlJ1YnkgQ29yZSBUZWFtMRIwEAYDVQQLDAlSdWJ5IFRlc3QxEjAQ
-BgNVBAMMCWxvY2FsaG9zdDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB
-AOjanAEuKxDsSc1eBxMHnHCexnS8E8Lhb8aC/eNI4CylaMeeQt5gVGXmahRXejDQ
-zLW22cPS38kll1Rnz/a+XsuL7gPF4eL55/fRDEfwuNozWq1Bree1onu3vzDaYPjj
-VKK8Ov0bdNncdELpKb7frLRP6zL0BvHhjEuoi/sp57G/HQHucw/5QNzVFXnZxnPQ
-wN3L5NoZR4DGFARy/Zp8jxGCdkkEeczyXDEilRM+XUCmTeCjAiZ9Uju77WWhD+1r
-sDzU3mEVXtPdaAmfSlelwqlthpLF9KTUtxM7UmMkBeLM44o81DU0KxC7WHLn4Y0d
-dIxhFiA90BxOj279/mQQT0ECAwEAAaN7MHkwCQYDVR0TBAIwADAsBglghkgBhvhC
-AQ0EHxYdT3BlblNTTCBHZW5lcmF0ZWQgQ2VydGlmaWNhdGUwHQYDVR0OBBYEFO0o
-wn6rS8jo/lVtZpUxHC1g+QI2MB8GA1UdIwQYMBaAFPbRIinVPSPXXq0MnOZ1j53N
-+J1TMA0GCSqGSIb3DQEBCwUAA4IBAQAduMWLckEgZa0nbxVjBiYSjZytyvTbl7SQ
-y/81lLsqp6GrHjUtpT/JJLAaWIl1PoEKLE+Y+VH7wKMJ0Aqb56K3w2BAyPRtsmpW
-EhdMACQx35xgrrFoVKnmtUoE5pIFhtla3JYwpVjeFJkP5RWJPpvrgOO9g8PqMzVL
-Pi/TDWSTZ3+N9T8MJ7w3WszWRxavWmLS2lH4dAZrJK0oaAiYN33tDqsegmEF0Lp1
-oKshsJr9K1SGHQ0fwtR3H3ImXq2Knwk2bUS+dMJaPv9cnXXWOHvFOflEbqHRjv9j
-28S7xpGSylxgmx3rCt4I7r/adgNlYimL+H/HhnMe9h8tiWn9vr1u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 -----END CERTIFICATE-----

test/net/fixtures/server.key

@@ -1,28 +1,27 @@
------BEGIN PRIVATE KEY-----
-MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQDo2pwBLisQ7EnN
-XgcTB5xwnsZ0vBPC4W/Ggv3jSOAspWjHnkLeYFRl5moUV3ow0My1ttnD0t/JJZdU
-Z8/2vl7Li+4DxeHi+ef30QxH8LjaM1qtQa3ntaJ7t78w2mD441SivDr9G3TZ3HRC
-6Sm+36y0T+sy9Abx4YxLqIv7Keexvx0B7nMP+UDc1RV52cZz0MDdy+TaGUeAxhQE
-cv2afI8RgnZJBHnM8lwxIpUTPl1Apk3gowImfVI7u+1loQ/ta7A81N5hFV7T3WgJ
-n0pXpcKpbYaSxfSk1LcTO1JjJAXizOOKPNQ1NCsQu1hy5+GNHXSMYRYgPdAcTo9u
-/f5kEE9BAgMBAAECggEBAOHkwhc7DLh8IhTDNSW26oMu5OP2WU1jmiYAigDmf+OQ
-DBgrZj+JQBci8qINQxL8XLukSZn5hvQCLc7Kbyu1/wyEEUFDxSGGwwzclodr9kho
-LX2LDASPZrOSzD2+fPi2wTKmXKuS6Uc44OjQfZkYMNkz9r4Vkm8xGgOD3VipjIYX
-QXlhhdqkXZcNABsihCV52GKkDFSVm8jv95YJc5xhoYCy/3a4/qPdF0aT2R7oYUej
-hKrxVDskyooe8Zg/JTydZNV5GQEDmW01/K3r6XGT26oPi1AqMU1gtv/jkW56CRQQ
-1got8smnqM+AV7Slf9R6DauIPdQJ2S8wsr/o8ISBsOECgYEA9YrqEP2gAYSGFXRt
-liw0WI2Ant8BqXS6yvq1jLo/qWhLw/ph4Di73OQ2mpycVTpgfGr2wFPQR1XJ+0Fd
-U+Ir/C3Q7FK4VIGHK7B0zNvZr5tEjlFfeRezo2JMVw5YWeSagIFcSwK+KqCTH9qc
-pw/Eb8nB/4XNcpTZu7Fg0Wc+ooUCgYEA8sVaicn1Wxkpb45a4qfrA6wOr5xdJ4cC
-A5qs7vjX2OdPIQOmoQhdI7bCWFXZzF33wA4YCws6j5wRaySLIJqdms8Gl9QnODy1
-ZlA5gwKToBC/jqPmWAXSKb8EH7cHilaxU9OKnQ7CfwlGLHqjMtjrhR7KHlt3CVRs
-oRmvsjZVXI0CgYAmPedslAO6mMhFSSfULrhMXmV82OCqYrrA6EEkVNGbcdnzAOkD
-gfKIWabDd8bFY10po4Mguy0CHzNhBXIioWQWV5BlbhC1YKMLw+S9DzSdLAKGY9gJ
-xQ4+UQ3wtRQ/k+IYR413RUsW2oFvgZ3KSyNeAb9MK6uuv84VdG/OzVSs/QKBgQDn
-kap//l2EbObiWyaERunckdVcW0lcN+KK75J/TGwPoOwQsLvTpPe65kxRGGrtDsEQ
-uCDk/+v3KkZPLgdrrTAih9FhJ+PVN8tMcb+6IM4SA4fFFr/UPJEwct0LJ3oQ0grJ
-y+HPWFHb/Uurh7t99/4H98uR02sjQh1wOeEmm78mzQKBgQDm+LzGH0se6CXQ6cdZ
-g1JRZeXkDEsrW3hfAsW62xJQmXcWxBoblP9OamMY+A06rM5og3JbDk5Zm6JsOaA8
-wS2gw4ilp46jors4eQey8ux7kB9LzdBoDBBElnsbjLO8oBNZlVcYXg+6BOl/CUi7
-2whRF0FEjKA8ehrNhAq+VFfFNw==
------END PRIVATE KEY-----
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

test/net/imap/test_imap_response_parser.rb

@@ -438,4 +438,13 @@ def test_uidplus_copyuid__uid_mapping
     )
   end
 
+  def test_uidplus_copyuid__too_large
+    parser = Net::IMAP::ResponseParser.new
+    assert_raise Net::IMAP::ResponseParseError, /uid-set is too large/ do
+      parser.parse(
+        "A004 OK [copyUID 1 10000:20000,1 1:10001] Done\r\n"
+      )
+    end
+  end
+
 end