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| 1 | +From 7904914e1cda3924fc45e0f8ee4aca7b3896487c Mon Sep 17 00:00:00 2001 |
| 2 | +From: Michael Fridman <mfridman@buf.build> |
| 3 | +Date: Fri, 21 Mar 2025 16:42:51 -0400 |
| 4 | +Subject: [PATCH] Backporting 0951d18 to v4 |
| 5 | + |
| 6 | +Signed-off-by: Azure Linux Security Servicing Account <azurelinux-security@microsoft.com> |
| 7 | +Upstream-reference: https://github.com/golang-jwt/jwt/commit/2f0e9add62078527821828c76865661aa7718a84.patch |
| 8 | +--- |
| 9 | + .../form3tech-oss/jwt-go/jwt_test.go | 89 +++++++++++++++++++ |
| 10 | + .../github.com/form3tech-oss/jwt-go/parser.go | 36 +++++++- |
| 11 | + 2 files changed, 122 insertions(+), 3 deletions(-) |
| 12 | + create mode 100644 vendor/github.com/form3tech-oss/jwt-go/jwt_test.go |
| 13 | + |
| 14 | +diff --git a/vendor/github.com/form3tech-oss/jwt-go/jwt_test.go b/vendor/github.com/form3tech-oss/jwt-go/jwt_test.go |
| 15 | +new file mode 100644 |
| 16 | +index 0000000..b01e899 |
| 17 | +--- /dev/null |
| 18 | ++++ b/vendor/github.com/form3tech-oss/jwt-go/jwt_test.go |
| 19 | +@@ -0,0 +1,89 @@ |
| 20 | ++package jwt |
| 21 | ++ |
| 22 | ++import ( |
| 23 | ++ "testing" |
| 24 | ++) |
| 25 | ++ |
| 26 | ++func TestSplitToken(t *testing.T) { |
| 27 | ++ t.Parallel() |
| 28 | ++ |
| 29 | ++ tests := []struct { |
| 30 | ++ name string |
| 31 | ++ input string |
| 32 | ++ expected []string |
| 33 | ++ isValid bool |
| 34 | ++ }{ |
| 35 | ++ { |
| 36 | ++ name: "valid token with three parts", |
| 37 | ++ input: "header.claims.signature", |
| 38 | ++ expected: []string{"header", "claims", "signature"}, |
| 39 | ++ isValid: true, |
| 40 | ++ }, |
| 41 | ++ { |
| 42 | ++ name: "invalid token with two parts only", |
| 43 | ++ input: "header.claims", |
| 44 | ++ expected: nil, |
| 45 | ++ isValid: false, |
| 46 | ++ }, |
| 47 | ++ { |
| 48 | ++ name: "invalid token with one part only", |
| 49 | ++ input: "header", |
| 50 | ++ expected: nil, |
| 51 | ++ isValid: false, |
| 52 | ++ }, |
| 53 | ++ { |
| 54 | ++ name: "invalid token with extra delimiter", |
| 55 | ++ input: "header.claims.signature.extra", |
| 56 | ++ expected: nil, |
| 57 | ++ isValid: false, |
| 58 | ++ }, |
| 59 | ++ { |
| 60 | ++ name: "invalid empty token", |
| 61 | ++ input: "", |
| 62 | ++ expected: nil, |
| 63 | ++ isValid: false, |
| 64 | ++ }, |
| 65 | ++ { |
| 66 | ++ name: "valid token with empty parts", |
| 67 | ++ input: "..signature", |
| 68 | ++ expected: []string{"", "", "signature"}, |
| 69 | ++ isValid: true, |
| 70 | ++ }, |
| 71 | ++ { |
| 72 | ++ // We are just splitting the token into parts, so we don't care about the actual values. |
| 73 | ++ // It is up to the caller to validate the parts. |
| 74 | ++ name: "valid token with all parts empty", |
| 75 | ++ input: "..", |
| 76 | ++ expected: []string{"", "", ""}, |
| 77 | ++ isValid: true, |
| 78 | ++ }, |
| 79 | ++ { |
| 80 | ++ name: "invalid token with just delimiters and extra part", |
| 81 | ++ input: "...", |
| 82 | ++ expected: nil, |
| 83 | ++ isValid: false, |
| 84 | ++ }, |
| 85 | ++ { |
| 86 | ++ name: "invalid token with many delimiters", |
| 87 | ++ input: "header.claims.signature..................", |
| 88 | ++ expected: nil, |
| 89 | ++ isValid: false, |
| 90 | ++ }, |
| 91 | ++ } |
| 92 | ++ |
| 93 | ++ for _, tt := range tests { |
| 94 | ++ t.Run(tt.name, func(t *testing.T) { |
| 95 | ++ parts, ok := splitToken(tt.input) |
| 96 | ++ if ok != tt.isValid { |
| 97 | ++ t.Errorf("expected %t, got %t", tt.isValid, ok) |
| 98 | ++ } |
| 99 | ++ if ok { |
| 100 | ++ for i, part := range tt.expected { |
| 101 | ++ if parts[i] != part { |
| 102 | ++ t.Errorf("expected %s, got %s", part, parts[i]) |
| 103 | ++ } |
| 104 | ++ } |
| 105 | ++ } |
| 106 | ++ }) |
| 107 | ++ } |
| 108 | ++} |
| 109 | +diff --git a/vendor/github.com/form3tech-oss/jwt-go/parser.go b/vendor/github.com/form3tech-oss/jwt-go/parser.go |
| 110 | +index 83f42eb..0e4a63a 100644 |
| 111 | +--- a/vendor/github.com/form3tech-oss/jwt-go/parser.go |
| 112 | ++++ b/vendor/github.com/form3tech-oss/jwt-go/parser.go |
| 113 | +@@ -7,6 +7,8 @@ import ( |
| 114 | + "strings" |
| 115 | + ) |
| 116 | + |
| 117 | ++const tokenDelimiter = "." |
| 118 | ++ |
| 119 | + type Parser struct { |
| 120 | + ValidMethods []string // If populated, only these methods will be considered valid |
| 121 | + UseJSONNumber bool // Use JSON Number format in JSON decoder |
| 122 | +@@ -100,9 +102,10 @@ func (p *Parser) ParseWithClaims(tokenString string, claims Claims, keyFunc Keyf |
| 123 | + // been checked previously in the stack) and you want to extract values from |
| 124 | + // it. |
| 125 | + func (p *Parser) ParseUnverified(tokenString string, claims Claims) (token *Token, parts []string, err error) { |
| 126 | +- parts = strings.Split(tokenString, ".") |
| 127 | +- if len(parts) != 3 { |
| 128 | +- return nil, parts, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed) |
| 129 | ++ var ok bool |
| 130 | ++ parts, ok = splitToken(tokenString) |
| 131 | ++ if !ok { |
| 132 | ++ return nil, nil, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed) |
| 133 | + } |
| 134 | + |
| 135 | + token = &Token{Raw: tokenString} |
| 136 | +@@ -152,3 +155,30 @@ func (p *Parser) ParseUnverified(tokenString string, claims Claims) (token *Toke |
| 137 | + |
| 138 | + return token, parts, nil |
| 139 | + } |
| 140 | ++ |
| 141 | ++// splitToken splits a token string into three parts: header, claims, and signature. It will only |
| 142 | ++// return true if the token contains exactly two delimiters and three parts. In all other cases, it |
| 143 | ++// will return nil parts and false. |
| 144 | ++func splitToken(token string) ([]string, bool) { |
| 145 | ++ parts := make([]string, 3) |
| 146 | ++ header, remain, ok := strings.Cut(token, tokenDelimiter) |
| 147 | ++ if !ok { |
| 148 | ++ return nil, false |
| 149 | ++ } |
| 150 | ++ parts[0] = header |
| 151 | ++ claims, remain, ok := strings.Cut(remain, tokenDelimiter) |
| 152 | ++ if !ok { |
| 153 | ++ return nil, false |
| 154 | ++ } |
| 155 | ++ parts[1] = claims |
| 156 | ++ // One more cut to ensure the signature is the last part of the token and there are no more |
| 157 | ++ // delimiters. This avoids an issue where malicious input could contain additional delimiters |
| 158 | ++ // causing unecessary overhead parsing tokens. |
| 159 | ++ signature, _, unexpected := strings.Cut(remain, tokenDelimiter) |
| 160 | ++ if unexpected { |
| 161 | ++ return nil, false |
| 162 | ++ } |
| 163 | ++ parts[2] = signature |
| 164 | ++ |
| 165 | ++ return parts, true |
| 166 | ++} |
| 167 | +-- |
| 168 | +2.45.4 |
| 169 | + |
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