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basic auth: fix timing oracle #2609

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merged 2 commits into from
Jan 13, 2021
Merged

basic auth: fix timing oracle #2609

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883f032
basic auth: fix timing oracle
Snawoot Jan 12, 2021
705955b
Merge branch 'master' into fix_basic_auth_timing_oracle
thinkerou Jan 13, 2021
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basic auth: fix timing oracle
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@Snawoot
Snawoot committed Jan 12, 2021
commit 883f03262f9885ff7e2ba288efe7de7fd1b1bb1d
3 changes: 2 additions & 1 deletion auth.go
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
package gin

import (
"crypto/subtle"
"encoding/base64"
"net/http"
"strconv"
Expand All @@ -30,7 +31,7 @@ func (a authPairs) searchCredential(authValue string) (string, bool) {
return "", false
}
for _, pair := range a {
if pair.value == authValue {
if subtle.ConstantTimeCompare([]byte(pair.value), []byte(authValue)) == 1 {
return pair.user, true
}
}
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