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-rw-r--r--src/fuzzer/x509_dn.cpp46
-rw-r--r--src/lib/asn1/asn1_obj.cpp3
-rw-r--r--src/lib/asn1/asn1_oid.h2
-rw-r--r--src/lib/asn1/oids.cpp2
-rw-r--r--src/lib/x509/x509_dn.cpp57
-rw-r--r--src/lib/x509/x509_dn.h11
-rw-r--r--src/tests/data/x509_dn.vec24
-rw-r--r--src/tests/test_x509_dn.cpp15
8 files changed, 147 insertions, 13 deletions
diff --git a/src/fuzzer/x509_dn.cpp b/src/fuzzer/x509_dn.cpp
new file mode 100644
index 000000000..dca6352e9
--- /dev/null
+++ b/src/fuzzer/x509_dn.cpp
@@ -0,0 +1,46 @@
+/*
+* (C) 2019 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include "fuzzers.h"
+#include <botan/x509_dn.h>
+#include <botan/ber_dec.h>
+#include <botan/hex.h>
+
+void fuzz(const uint8_t in[], size_t len)
+ {
+ const size_t half = len / 2;
+ Botan::X509_DN dn1;
+ Botan::X509_DN dn2;
+
+ try
+ {
+ Botan::BER_Decoder ber1(in, half);
+ dn1.decode_from(ber1);
+ ber1.verify_end();
+
+ Botan::BER_Decoder ber2(in + half, half);
+ dn2.decode_from(ber2);
+ ber2.verify_end();
+ }
+ catch(...) { return; }
+
+ const bool eq = dn1 == dn2;
+ const bool lt1 = dn1 < dn2;
+ const bool lt2 = dn2 < dn1;
+
+ if(lt1 == false && lt2 == false)
+ {
+ FUZZER_ASSERT_TRUE(eq);
+ }
+ else
+ {
+ // one is less than the other
+ FUZZER_ASSERT_TRUE(lt1 || lt2);
+
+ // it is not the case that both are less than the other
+ FUZZER_ASSERT_TRUE(!lt1 || !lt2);
+ }
+ }
diff --git a/src/lib/asn1/asn1_obj.cpp b/src/lib/asn1/asn1_obj.cpp
index 815bc4ef8..824355264 100644
--- a/src/lib/asn1/asn1_obj.cpp
+++ b/src/lib/asn1/asn1_obj.cpp
@@ -136,6 +136,9 @@ std::string asn1_tag_to_string(ASN1_Tag type)
case Botan::BMP_STRING:
return "BMP STRING";
+ case Botan::UNIVERSAL_STRING:
+ return "UNIVERSAL STRING";
+
case Botan::UTC_TIME:
return "UTC TIME";
diff --git a/src/lib/asn1/asn1_oid.h b/src/lib/asn1/asn1_oid.h
index f3ff36ce2..1c8959d99 100644
--- a/src/lib/asn1/asn1_oid.h
+++ b/src/lib/asn1/asn1_oid.h
@@ -78,7 +78,7 @@ class BOTAN_PUBLIC_API(2,0) OID final : public ASN1_Object
* Construct an OID from a string.
* @param str a string in the form "a.b.c" etc., where a,b,c are numbers
*/
- OID(const std::string& str = "");
+ explicit OID(const std::string& str = "");
explicit OID(std::initializer_list<uint32_t> init) : m_id(init) {}
private:
diff --git a/src/lib/asn1/oids.cpp b/src/lib/asn1/oids.cpp
index 80f079395..844cdff79 100644
--- a/src/lib/asn1/oids.cpp
+++ b/src/lib/asn1/oids.cpp
@@ -28,7 +28,7 @@ class OID_Map final
lock_guard_type<mutex_type> lock(m_mutex);
auto i = m_str2oid.find(str);
if(i == m_str2oid.end())
- m_str2oid.insert(std::make_pair(str, oid.to_string()));
+ m_str2oid.insert(std::make_pair(str, oid));
}
void add_oid2str(const OID& oid, const std::string& str)
diff --git a/src/lib/x509/x509_dn.cpp b/src/lib/x509/x509_dn.cpp
index 106190011..6e2707673 100644
--- a/src/lib/x509/x509_dn.cpp
+++ b/src/lib/x509/x509_dn.cpp
@@ -184,16 +184,54 @@ bool operator<(const X509_DN& dn1, const X509_DN& dn2)
auto attr1 = dn1.get_attributes();
auto attr2 = dn2.get_attributes();
- if(attr1.size() < attr2.size()) return true;
- if(attr1.size() > attr2.size()) return false;
+ // If they are not the same size, choose the smaller as the "lessor"
+ if(attr1.size() < attr2.size())
+ return true;
+ if(attr1.size() > attr2.size())
+ return false;
- for(auto p1 = attr1.begin(); p1 != attr1.end(); ++p1)
+ // We know they are the same # of elements, now compare the OIDs:
+ auto p1 = attr1.begin();
+ auto p2 = attr2.begin();
+
+ while(p1 != attr1.end() && p2 != attr2.end())
{
- auto p2 = attr2.find(p1->first);
- if(p2 == attr2.end()) return false;
- if(p1->second > p2->second) return false;
- if(p1->second < p2->second) return true;
+ if(p1->first != p2->first)
+ {
+ return (p1->first < p2->first);
+ }
+
+ ++p1;
+ ++p2;
}
+
+ // We know this is true because maps have the same size
+ BOTAN_ASSERT_NOMSG(p1 == attr1.end());
+ BOTAN_ASSERT_NOMSG(p2 == attr2.end());
+
+ // Now we know all elements have the same OIDs, compare
+ // their string values:
+
+ p1 = attr1.begin();
+ p2 = attr2.begin();
+ while(p1 != attr1.end() && p2 != attr2.end())
+ {
+ BOTAN_DEBUG_ASSERT(p1->first == p2->first);
+
+ // They may be binary different but same by X.500 rules, check this
+ if(!x500_name_cmp(p1->second, p2->second))
+ {
+ // If they are not (by X.500) the same string, pick the
+ // lexicographic first as the lessor
+ return (p1->second < p2->second);
+ }
+
+ ++p1;
+ ++p2;
+ }
+
+ // if we reach here, then the DNs should be identical
+ BOTAN_DEBUG_ASSERT(dn1 == dn2);
return false;
}
@@ -250,7 +288,10 @@ void X509_DN::decode_from(BER_Decoder& source)
OID oid;
ASN1_String str;
- rdn.start_cons(SEQUENCE).decode(oid).decode(str).end_cons();
+ rdn.start_cons(SEQUENCE)
+ .decode(oid)
+ .decode(str) // TODO support Any
+ .end_cons().verify_end("Invalid X509_DN, data follows RDN");
add_attribute(oid, str);
}
diff --git a/src/lib/x509/x509_dn.h b/src/lib/x509/x509_dn.h
index f47099c9a..db608ff26 100644
--- a/src/lib/x509/x509_dn.h
+++ b/src/lib/x509/x509_dn.h
@@ -87,9 +87,14 @@ class BOTAN_PUBLIC_API(2,0) X509_DN final : public ASN1_Object
std::vector<uint8_t> m_dn_bits;
};
-bool BOTAN_PUBLIC_API(2,0) operator==(const X509_DN&, const X509_DN&);
-bool BOTAN_PUBLIC_API(2,0) operator!=(const X509_DN&, const X509_DN&);
-bool BOTAN_PUBLIC_API(2,0) operator<(const X509_DN&, const X509_DN&);
+bool BOTAN_PUBLIC_API(2,0) operator==(const X509_DN& dn1, const X509_DN& dn2);
+bool BOTAN_PUBLIC_API(2,0) operator!=(const X509_DN& dn1, const X509_DN& dn2);
+
+/*
+The ordering here is arbitrary and may change from release to release.
+It is intended for allowing DNs as keys in std::map and similiar containers
+*/
+bool BOTAN_PUBLIC_API(2,0) operator<(const X509_DN& dn1, const X509_DN& dn2);
BOTAN_PUBLIC_API(2,0) std::ostream& operator<<(std::ostream& out, const X509_DN& dn);
BOTAN_PUBLIC_API(2,0) std::istream& operator>>(std::istream& in, X509_DN& dn);
diff --git a/src/tests/data/x509_dn.vec b/src/tests/data/x509_dn.vec
index ab9e2dec3..e71510dbb 100644
--- a/src/tests/data/x509_dn.vec
+++ b/src/tests/data/x509_dn.vec
@@ -1,8 +1,29 @@
[Equal]
+# Empty
+DN1 = 3000
+DN2 = 3000
+
+# Equal binary
DN1 = 301C310B3009060355040613025654310D300B0603550403130454455354
DN2 = 301C310B3009060355040613025654310D300B0603550403130454455354
+# Different string types, same contents
+DN1 = 302E3111300F06035504061C0800000056000000543119301706035504031C1000000054000000450000005300000054
+DN2 = 301C310B3009060355040613025654310D300B0603550403130454455354
+
+# Same contents, different casing (X.500 demands case-insensitive), different order
+DN1 = 301C310B3009060355040613025654310D300B0603550403130454455354
+DN2 = 301C310D300B0603550403130474457354310B3009060355040613027674
+
+# Empty, different encodings
+DN1 = 3000
+DN2 = 3080
+
+# Empty, one using EOC encoding
+DN1 = 0000308100
+DN2 = 3000
+
[Unequal]
DN1 = 301C310B3009060355040613025654310D300B0603550403130454450054
DN2 = 301C310B3009060355040613025600310D300B0603550403130454455354
@@ -12,3 +33,6 @@ DN2 = 3019311730150603550403130E4141202020202020202020202020
DN1 = 3018311630140603550403130D41412041414141414141414141
DN2 = 3019311730150603550403130E4141202020202020202020202020
+
+DN1 = 3080318030800604307A7AFD1E808080300080208080800F0029000B800000000001000000D60680FF7FFFFF00040404040404040404040404230404040404040404040404040404040404040404040404040404040404040404040404040404040404040404040404000000
+DN2 = 000000000000000000000000000000000000000030803180308006047A7A30FD1E808080300080208080810F0000000B800000000001000000D60680FF7FFF040404040404040404040404040404040404040404040404000000000000000404040404040404040404890880
diff --git a/src/tests/test_x509_dn.cpp b/src/tests/test_x509_dn.cpp
index 662c11e74..7e93d2c24 100644
--- a/src/tests/test_x509_dn.cpp
+++ b/src/tests/test_x509_dn.cpp
@@ -23,6 +23,7 @@ class X509_DN_Comparisons_Tests final : public Text_Based_Test
{
const std::vector<uint8_t> dn_bits1 = vars.get_req_bin("DN1");
const std::vector<uint8_t> dn_bits2 = vars.get_req_bin("DN2");
+
const bool dn_same = (type == "Equal");
Test::Result result("X509_DN comparisons");
@@ -38,6 +39,20 @@ class X509_DN_Comparisons_Tests final : public Text_Based_Test
const bool compared_same = (dn1 == dn2);
result.test_eq("Comparison matches expected", dn_same, compared_same);
+
+ const bool lt1 = (dn1 < dn2);
+ const bool lt2 = (dn2 < dn1);
+
+ if(dn_same)
+ {
+ result.test_eq("same means neither is less than", lt1, false);
+ result.test_eq("same means neither is less than", lt2, false);
+ }
+ else
+ {
+ result.test_eq("different means one is less than", lt1 || lt2, true);
+ result.test_eq("different means only one is less than", lt1 && lt2, false);
+ }
}
catch(Botan::Exception& e)
{
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 17:29:27 +0000