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[stable25] fix(apps): Fix loading info.xml file #39493

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merged 1 commit into from
Jul 20, 2023
Merged

[stable25] fix(apps): Fix loading info.xml file #39493

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5 changes: 5 additions & 0 deletions lib/base.php
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Original file line number Diff line number Diff line change
Expand Up @@ -202,7 +202,7 @@
// slash which is required by URL generation.
if (isset($_SERVER['REQUEST_URI']) && $_SERVER['REQUEST_URI'] === \OC::$WEBROOT &&
substr($_SERVER['REQUEST_URI'], -1) !== '/') {
header('Location: '.\OC::$WEBROOT.'/');

Check failure on line 205 in lib/base.php

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Detected tainted header (see https://psalm.dev/256)

Check failure on line 205 in lib/base.php

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Detected tainted header (see https://psalm.dev/256)
exit();
}
}
Expand Down Expand Up @@ -574,6 +574,11 @@
}

public static function init() {
// prevent any XML processing from loading external entities
libxml_set_external_entity_loader(static function () {
return null;
});

// calculate the root directories
OC::$SERVERROOT = str_replace("\\", '/', substr(__DIR__, 0, -4));

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6 changes: 3 additions & 3 deletions lib/private/App/InfoParser.php
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Expand Up @@ -31,7 +31,7 @@

use OCP\ICache;
use function libxml_disable_entity_loader;
use function simplexml_load_file;
use function simplexml_load_string;

class InfoParser {
/** @var \OCP\ICache|null */
Expand Down Expand Up @@ -63,10 +63,10 @@
libxml_use_internal_errors(true);
if ((PHP_VERSION_ID < 80000)) {
$loadEntities = libxml_disable_entity_loader(false);
$xml = simplexml_load_file($file);
$xml = simplexml_load_string(file_get_contents($file));

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TaintedFile Error

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libxml_disable_entity_loader($loadEntities);
} else {
$xml = simplexml_load_file($file);
$xml = simplexml_load_string(file_get_contents($file));

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Detected tainted file handling
}

if ($xml === false) {
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4 changes: 2 additions & 2 deletions lib/private/Installer.php
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Expand Up @@ -333,10 +333,10 @@ public function downloadApp($appId, $allowUnstable = false) {
// Check if appinfo/info.xml has the same app ID as well
if ((PHP_VERSION_ID < 80000)) {
$loadEntities = libxml_disable_entity_loader(false);
$xml = simplexml_load_file($extractDir . '/' . $folders[0] . '/appinfo/info.xml');
$xml = simplexml_load_string(file_get_contents($extractDir . '/' . $folders[0] . '/appinfo/info.xml'));
libxml_disable_entity_loader($loadEntities);
} else {
$xml = simplexml_load_file($extractDir . '/' . $folders[0] . '/appinfo/info.xml');
$xml = simplexml_load_string(file_get_contents($extractDir . '/' . $folders[0] . '/appinfo/info.xml'));
}
if ((string)$xml->id !== $appId) {
throw new \Exception(
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