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Don't panic if we fail to parse U2FRegistration data (#17304) (#17371) 

Backport #17304

Downgrade logging statement from Fatal to Error so that errors parsing
U2FRegistration data does not panic; instead, the invalid key will be
skipped and we will attempt to parse the next one, if available.

Signed-off-by: David Jimenez <dvejmz@sgfault.com>

Co-authored-by: David Jimenez <dvejmz@users.noreply.github.com>
This commit is contained in:
zeripath 2021-10-20 20:45:17 +01:00 committed by GitHub
parent eb748ff79e
commit 79a3d277e5
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 28 additions and 2 deletions
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2
models/u2f.go
View File

@ -52,7 +52,7 @@ func (list U2FRegistrationList) ToRegistrations() []u2f.Registration {
for _, reg := range list { for _, reg := range list {
r, err := reg.Parse() r, err := reg.Parse()
if err != nil { if err != nil {
log.Fatal("parsing u2f registration: %v", err) log.Error("parsing u2f registration: %v", err)
continue continue
} }
regs = append(regs, *r) regs = append(regs, *r)

26
models/u2f_test.go
View File

@ -5,6 +5,7 @@
package models package models
import ( import (
"encoding/hex"
"testing" "testing"
"github.com/stretchr/testify/assert" "github.com/stretchr/testify/assert"
@ -27,6 +28,7 @@ func TestGetU2FRegistrationsByUID(t *testing.T) {
assert.NoError(t, PrepareTestDatabase()) assert.NoError(t, PrepareTestDatabase())
res, err := GetU2FRegistrationsByUID(1) res, err := GetU2FRegistrationsByUID(1)
assert.NoError(t, err) assert.NoError(t, err)
assert.Len(t, res, 1) assert.Len(t, res, 1)
assert.Equal(t, "U2F Key", res[0].Name) assert.Equal(t, "U2F Key", res[0].Name)
@ -71,3 +73,27 @@ func TestDeleteRegistration(t *testing.T) {
assert.NoError(t, DeleteRegistration(reg)) assert.NoError(t, DeleteRegistration(reg))
AssertNotExistsBean(t, &U2FRegistration{ID: 1}) AssertNotExistsBean(t, &U2FRegistration{ID: 1})
} }
const validU2FRegistrationResponseHex = "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"
func TestToRegistrations_SkipInvalidItemsWithoutCrashing(t *testing.T) {
regKeyRaw, _ := hex.DecodeString(validU2FRegistrationResponseHex)
regs := U2FRegistrationList{
&U2FRegistration{ID: 1},
&U2FRegistration{ID: 2, Name: "U2F Key", UserID: 2, Counter: 0, Raw: regKeyRaw, CreatedUnix: 946684800, UpdatedUnix: 946684800},
}
actual := regs.ToRegistrations()
assert.Len(t, actual, 1)
}
func TestToRegistrations(t *testing.T) {
regKeyRaw, _ := hex.DecodeString(validU2FRegistrationResponseHex)
regs := U2FRegistrationList{
&U2FRegistration{ID: 1, Name: "U2F Key", UserID: 1, Counter: 0, Raw: regKeyRaw, CreatedUnix: 946684800, UpdatedUnix: 946684800},
&U2FRegistration{ID: 2, Name: "U2F Key", UserID: 2, Counter: 0, Raw: regKeyRaw, CreatedUnix: 946684800, UpdatedUnix: 946684800},
}
actual := regs.ToRegistrations()
assert.Len(t, actual, 2)
}

2
routers/web/user/auth.go
View File

@ -451,7 +451,7 @@ func U2FSign(ctx *context.Context) {
for _, reg := range regs { for _, reg := range regs {
r, err := reg.Parse() r, err := reg.Parse()
if err != nil { if err != nil {
log.Fatal("parsing u2f registration: %v", err) log.Error("parsing u2f registration: %v", err)
continue continue
} }
newCounter, authErr := r.Authenticate(*signResp, *challenge, reg.Counter) newCounter, authErr := r.Authenticate(*signResp, *challenge, reg.Counter)