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[stable15] Fix the thorrtler whitelist bitmask #14151

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Merged
rullzer merged 1 commit into from
Feb 12, 2019
Merged

[stable15] Fix the thorrtler whitelist bitmask #14151

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Fix the thorrtler whitelist bitmask 
Before we actually didn't check each bit of the bitmask. Now we do.

Signed-off-by: Roeland Jago Douma <[email protected]>
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@rullzer
rullzer authored and Backportbot committed Feb 12, 2019
commit 096498c0335b5e7461d9d2e4bb1874a42ebef83f
6 changes: 4 additions & 2 deletions lib/private/Security/Bruteforce/Throttler.php
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Original file line number Diff line number Diff line change
Expand Up @@ -177,8 +177,10 @@ private function isIPWhitelisted($ip) {
$part = ord($addr[(int)($i/8)]);
$orig = ord($ip[(int)($i/8)]);

$part = $part & (15 << (1 - ($i % 2)));
$orig = $orig & (15 << (1 - ($i % 2)));
$bitmask = 1 << (7 - ($i % 8));

$part = $part & $bitmask;
$orig = $orig & $bitmask;

if ($part !== $orig) {
$valid = false;
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29 changes: 29 additions & 0 deletions tests/lib/Security/Bruteforce/ThrottlerTest.php
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Expand Up @@ -100,6 +100,27 @@ public function dataIsIPWhitelisted() {
],
true,
],
[
'10.10.10.10',
[
'whitelist_0' => '10.10.10.11/31',
],
true,
],
[
'10.10.10.10',
[
'whitelist_0' => '10.10.10.9/31',
],
false,
],
[
'10.10.10.10',
[
'whitelist_0' => '10.10.10.15/29',
],
true,
],
[
'dead:beef:cafe::1',
[
Expand Down Expand Up @@ -127,6 +148,14 @@ public function dataIsIPWhitelisted() {
],
true,
],
[
'dead:beef:cafe::1111',
[
'whitelist_0' => 'dead:beef:cafe::1100/123',

],
true,
],
[
'invalid',
[],
Expand Down