c5679da3a1
to address CVE-2020-26160
full diff: a601269ab7...v3.2.2
3.2.1 release notes
---------------------------------------
- Import Path Change: See MIGRATION_GUIDE.md for tips on updating your code
Changed the import path from github.com/dgrijalva/jwt-go to github.com/golang-jwt/jwt
- Fixed type confusion issue between string and []string in VerifyAudience.
This fixes CVE-2020-26160
3.2.2 release notes
---------------------------------------
- Starting from this release, we are adopting the policy to support the most 2
recent versions of Go currently available. By the time of this release, this
is Go 1.15 and 1.16.
- Fixed a potential issue that could occur when the verification of exp, iat
or nbf was not required and contained invalid contents, i.e. non-numeric/date.
Thanks for @thaJeztah for making us aware of that and @giorgos-f3 for originally
reporting it to the formtech fork.
- Added support for EdDSA / ED25519.
- Optimized allocations.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
120 lines
2.9 KiB
Go
120 lines
2.9 KiB
Go
package jwt
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import (
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"encoding/json"
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"errors"
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// "fmt"
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)
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// Claims type that uses the map[string]interface{} for JSON decoding
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// This is the default claims type if you don't supply one
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type MapClaims map[string]interface{}
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// VerifyAudience Compares the aud claim against cmp.
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// If required is false, this method will return true if the value matches or is unset
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func (m MapClaims) VerifyAudience(cmp string, req bool) bool {
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var aud []string
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switch v := m["aud"].(type) {
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case string:
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aud = append(aud, v)
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case []string:
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aud = v
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case []interface{}:
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for _, a := range v {
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vs, ok := a.(string)
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if !ok {
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return false
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}
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aud = append(aud, vs)
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}
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}
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return verifyAud(aud, cmp, req)
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}
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// Compares the exp claim against cmp.
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// If required is false, this method will return true if the value matches or is unset
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func (m MapClaims) VerifyExpiresAt(cmp int64, req bool) bool {
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exp, ok := m["exp"]
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if !ok {
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return !req
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}
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switch expType := exp.(type) {
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case float64:
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return verifyExp(int64(expType), cmp, req)
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case json.Number:
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v, _ := expType.Int64()
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return verifyExp(v, cmp, req)
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}
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return false
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}
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// Compares the iat claim against cmp.
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// If required is false, this method will return true if the value matches or is unset
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func (m MapClaims) VerifyIssuedAt(cmp int64, req bool) bool {
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iat, ok := m["iat"]
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if !ok {
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return !req
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}
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switch iatType := iat.(type) {
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case float64:
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return verifyIat(int64(iatType), cmp, req)
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case json.Number:
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v, _ := iatType.Int64()
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return verifyIat(v, cmp, req)
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}
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return false
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}
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// Compares the iss claim against cmp.
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// If required is false, this method will return true if the value matches or is unset
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func (m MapClaims) VerifyIssuer(cmp string, req bool) bool {
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iss, _ := m["iss"].(string)
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return verifyIss(iss, cmp, req)
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}
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// Compares the nbf claim against cmp.
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// If required is false, this method will return true if the value matches or is unset
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func (m MapClaims) VerifyNotBefore(cmp int64, req bool) bool {
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nbf, ok := m["nbf"]
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if !ok {
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return !req
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}
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switch nbfType := nbf.(type) {
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case float64:
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return verifyNbf(int64(nbfType), cmp, req)
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case json.Number:
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v, _ := nbfType.Int64()
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return verifyNbf(v, cmp, req)
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}
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return false
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}
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// Validates time based claims "exp, iat, nbf".
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// There is no accounting for clock skew.
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// As well, if any of the above claims are not in the token, it will still
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// be considered a valid claim.
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func (m MapClaims) Valid() error {
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vErr := new(ValidationError)
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now := TimeFunc().Unix()
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if !m.VerifyExpiresAt(now, false) {
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vErr.Inner = errors.New("Token is expired")
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vErr.Errors |= ValidationErrorExpired
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}
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if !m.VerifyIssuedAt(now, false) {
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vErr.Inner = errors.New("Token used before issued")
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vErr.Errors |= ValidationErrorIssuedAt
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}
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if !m.VerifyNotBefore(now, false) {
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vErr.Inner = errors.New("Token is not valid yet")
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vErr.Errors |= ValidationErrorNotValidYet
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}
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if vErr.valid() {
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return nil
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}
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return vErr
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}
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