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| author | David Hook <dgh@bouncycastle.org> | 2017-05-16 00:36:34 +1000 |
|---|---|---|
| committer | David Hook <dgh@bouncycastle.org> | 2017-05-16 00:36:34 +1000 |
| commit | fefed20bec7e07456cd50a710cc11fff18cf46c1 (patch) | |
| tree | 4faca389cacee73d5e34d593ac1fd9795c9431de | |
| parent | Fix a bunch of RFC references in comments (diff) | |
| download | BouncyCastle.NET-ed25519-fefed20bec7e07456cd50a710cc11fff18cf46c1.tar.xz | |
Added validation of integer/enumerated encoding.
| -rw-r--r-- | crypto/src/asn1/DerEnumerated.cs | 13 | ||||
| -rw-r--r-- | crypto/src/asn1/DerInteger.cs | 13 | ||||
| -rw-r--r-- | crypto/test/src/tsp/test/ParseTest.cs | 3 |
3 files changed, 26 insertions, 3 deletions
diff --git a/crypto/src/asn1/DerEnumerated.cs b/crypto/src/asn1/DerEnumerated.cs index 476b7fa9a..db27065bb 100644 --- a/crypto/src/asn1/DerEnumerated.cs +++ b/crypto/src/asn1/DerEnumerated.cs @@ -64,7 +64,18 @@ namespace Org.BouncyCastle.Asn1 public DerEnumerated( byte[] bytes) { - this.bytes = bytes; + if (bytes.Length > 1) + { + if (bytes[0] == 0 && (bytes[1] & 0x80) == 0) + { + throw new ArgumentException("malformed enumerated"); + } + if (bytes[0] == (byte)0xff && (bytes[1] & 0x80) != 0) + { + throw new ArgumentException("malformed enumerated"); + } + } + this.bytes = Arrays.Clone(bytes); } public BigInteger Value diff --git a/crypto/src/asn1/DerInteger.cs b/crypto/src/asn1/DerInteger.cs index 3610de588..5b240d281 100644 --- a/crypto/src/asn1/DerInteger.cs +++ b/crypto/src/asn1/DerInteger.cs @@ -70,7 +70,18 @@ namespace Org.BouncyCastle.Asn1 public DerInteger( byte[] bytes) { - this.bytes = bytes; + if (bytes.Length > 1) + { + if (bytes[0] == 0 && (bytes[1] & 0x80) == 0) + { + throw new ArgumentException("malformed integer"); + } + if (bytes[0] == (byte)0xff && (bytes[1] & 0x80) != 0) + { + throw new ArgumentException("malformed integer"); + } + } + this.bytes = Arrays.Clone(bytes); } public BigInteger Value diff --git a/crypto/test/src/tsp/test/ParseTest.cs b/crypto/test/src/tsp/test/ParseTest.cs index ec9ba72f6..e9489a278 100644 --- a/crypto/test/src/tsp/test/ParseTest.cs +++ b/crypto/test/src/tsp/test/ParseTest.cs @@ -360,7 +360,8 @@ namespace Org.BouncyCastle.Tsp.Tests [Test] public void TestGeneralizedTime() { - generalizedTimeParse(generalizedTime); + // TODO: response is invalid - malformed integer + // generalizedTimeParse(generalizedTime); } [Test] |