Advisories for Composer/Symfony/Symfony package

An application is vulnerable if it uses the client IP address as returned by the Request::getClientIp() method for sensitive decisions like IP based access control. To fix this security issue, the following changes have been made to all versions of Symfony2: A new Request::setTrustedProxies() method has been introduced and should be used intead of Request::trustProxyData() to enable the trust proxy mode. It takes an array of trusted proxy IP addresses …

Damien Tournoud, from the Drupal security team, contacted us two days ago about a security issue in the Request::getClientIp() method when the trust proxy mode is enabled (Request::trustProxyData()). An application is vulnerable if it uses the client IP address as returned by the Request::getClientIp() method for sensitive decisions like IP based access control. To fix this security issue, the following changes have been made to all versions of Symfony2: A …

Symfony 2.0.11 carried a [similar] XXE security fix, however, on review of ZF2 I also noted a vulnerability to XML Entity Expansion (XEE) attacks whereby all extensions making use of libxml2 have no defense against XEE Quadratic Blowup Attacks. The vulnerability is a function of there being no current method of disabling custom entities in PHP (i.e. defined internal to the XML document without using external entities). In a QBA, …

The XMLEncoder component of Symfony 2.0.x fails to disable external entities when parsing XML. In the Symfony2 framework the XML class may be used to deserialize objects or as part of a client/server API. By using external entities it is possible to include arbitrary files from the file system.

Symfony 2.0.6 has just been released. It addresses a security vulnerability in the EntityUserProvider as provided in the Doctrine bridge. If you let your users update their login/username from a form, and if you are using Doctrine as a user provider, then you are vulnerable and you should upgrade as soon as possible. The issue is that it is possible for a user to switch to another one. Here is …

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Starting in versions 2.0.0, 5.0.0, and 6.0.0 and prior to versions 4.4.51, 5.4.31, and 6.3.8, some Twig filters in CodeExtension use is_safe=html but don't actually ensure their input is safe. As of versions 4.4.51, 5.4.31, and 6.3.8, Symfony now escapes the output of the affected filters.

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Starting in version 6.0.0 and prior to version 6.3.8, the error message in WebhookController returns unescaped user-submitted input. As of version 6.3.8, WebhookController now does not return any user-submitted input in its response.

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Starting in versions 5.4.21 and 6.2.7 and prior to versions 5.4.31 and 6.3.8, SessionStrategyListener does not migrate the session after every successful login. It does so only in case the logged in user changes by means of checking the user identifier. In some use cases, the user identifier does not change between the …

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. When authenticating users Symfony by default regenerates the session ID upon login, but preserves the rest of session attributes. Because this does not clear CSRF tokens upon login, this might enables same-site attackers to bypass the CSRF protection mechanism by performing an attack similar to a session-fixation. This issue has been fixed in …

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The Symfony HTTP cache system, acts as a reverse proxy: It caches entire responses (including headers) and returns them to the clients. In a recent change in the AbstractSessionListener, the response might contain a Set-Cookie header. If the Symfony HTTP cache system is enabled, this response might bill stored and return to the …

Cross-Site Request Forgery (CSRF) in symfony/symfony.

The advisory has been marked as a duplicate of CVE-2022-24894

Multiple cross-site scripting (XSS) vulnerabilities in content/content.systempreferences.php in Symphony CMS before 2.6.4 allow remote attackers to inject arbitrary web script or HTML via the (1) email_sendmail[from_name], (2) email_sendmail[from_address], (3) email_smtp[from_name], (4) email_smtp[from_address], (5) email_smtp[host], (6) email_smtp[port], (7) jit_image_manipulation[trusted_external_sites], or (8) maintenance_mode[ip_allow list] parameters to system/preferences.

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The Symfony form component provides a CSRF protection mechanism by using a random token injected in the form and using the session to store and control the token submitted by the user. When using the FrameworkBundle, this protection can be enabled or disabled with the configuration. If the configuration is not specified, by …

Symfony/SecurityBundle is the security system for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Since the rework of the Remember me cookie, the cookie is not invalidated when the user changes their password. Attackers can therefore maintain their access to the account even if the password is changed as long as they have had the chance to login once and get a …

Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the trusted_headers allowed list are ignored and protect users from Cache poisoning attacks. In Symfony, maintainers added support for the X-Forwarded-Prefix headers, but this header was accessible in SubRequest, even if it was not part of the trusted_headers allowed list. An …

Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony is vulnerable to CSV injection, also known as formula injection. In Symfony, maintainers added the opt-in csv_escape_formulas option in the CsvEncoder, to prefix all cells starting with =, +, - or @ with a tab \t. Since then, OWASP added 2 chars in that list, …

Description The ability to enumerate users was possible without relevant permissions due to different exception messages depending on whether the user existed or not. It was also possible to enumerate users by using a timing attack, by comparing time elapsed when authenticating an existing user and authenticating a non-existing user. Resolution We now ensure that 403s are returned whether the user exists or not if the password is invalid or …

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that status codes are returned whether the user exists or not if a user cannot switch to a user or …

In Symfony, the CachingHttpClient class from the HttpClient Symfony component relies on the HttpCache class to handle requests. HttpCache uses internal headers like X-Body-Eval and X-Body-File to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by CachingHttpClient and if an attacker can control the response …

Serializing certain cache adapter interfaces could result in remote code injection.

The UriSigner is subject to timing attacks.

An issue was discovered in Symfony. The ability to enumerate users was possible due to different handling depending on whether the user existed when making unauthorized attempts to use the switch users functionality.

The VarExport component incorrectly escapes strings, allowing some specially crafted ones to escalate to execution of arbitrary PHP code.

If an application passes unvalidated user input as the file for which MIME type validation should occur, then arbitrary arguments are passed to the underlying file command.

php-symfony2-Validator suffers from a loss of information during serialization.

Validating a user password with a UserPassword constraint but with no NotBlank constraint passes without any error (the empty password would not be compared with the user password). Note that you should always be explicit and add a NotBlank constraint, but as it worked before without, it's considered as a backward compatibility break and a security issue.

In Symfony, when service ids allow user input, this could allow for SQL Injection and remote code execution.

In Symfony, HTTP Methods provided as verbs or using the override header may be treated as trusted input, but they are not validated, possibly causing SQL injection or XSS.

In Symfony, a vulnerability would allow an attacker to authenticate as a privileged user on sites with user registration and remember me login functionality enabled.

In Symfony it is possible to cache objects that may contain bad user input. On serialization or unserialization, this could result in the deletion of files that the current user has access to.

In Symfony, validation messages are not escaped, which can lead to XSS when user input is included. This is related to symfony/framework-bundle.

By using backslashes in the _failure_path input field of login forms, an attacker can work around the redirection target restrictions and effectively redirect the user to any domain after login.

When using the scalar type hint string in a setter method (e.g. setName(string$name)) of a class that's the data_class of a form, and when a file upload is submitted to the corresponding field instead of a normal text input, then UploadedFile::__toString() is called which will then return and disclose the path of the uploaded file. If combined with a local file inclusion issue in certain circumstances this could escalate it …

The current implementation of CSRF protection in Symfony does not use different tokens for HTTP and HTTPS.

When a form is submitted by the user, the request handler classes of the Form component merge POST data (known as the $_POST array in plain PHP) and uploaded files data (known as the $_FILES array in plain PHP) into one array. This big array forms the data that are then bound to the form. At this stage there is no difference anymore between submitted POST data and uploaded files. …

This package includes various bundle readers that are used to read resource bundles from the local filesystem. The read() methods of these classes use a path and a locale to determine the language bundle to retrieve. The locale argument value is commonly retrieved from untrusted user input (like a URL parameter). An attacker can use this argument to navigate to arbitrary directories via the dot-dot-slash attack.

An issue was discovered in Http Foundation in Symfony. It arises from support for a (legacy) IIS header that lets users override the path in the request URL via the X-Original-URL or X-Rewrite-URL HTTP request header. These headers are designed for IIS support, but it's not verified that the server is in fact running IIS, which means anybody who can send these requests to an application can trigger this. This …

An issue was discovered in HttpKernel in Symfony When using HttpCache, the values of the X-Forwarded-Host headers are implicitly set as trusted while this should be forbidden, leading to potential host header injection.

The debug handler in Symfony has an XSS via an array key during exception pretty printing in ExceptionHandler.php, as demonstrated by a /_debugbar/open?op=get` URI.

The security handlers in the Security component in Symfony have an Open redirect vulnerability when security.http_utils is inlined by a container.

A session fixation vulnerability within the Guard login feature may allow an attacker to impersonate a victim towards the web application if the session id value was previously known to the attacker.

DefaultAuthenticationSuccessHandler or DefaultAuthenticationFailureHandler take the content of the _target_path parameter and generate a redirect response but no check is performed on the path, which could be an absolute URL to an external domain, opening redirect vulnerability. Open redirect vulnerability are not too much considered but they can be exploited for example to mount effective phishing attacks.

An issue was discovered in the HttpFoundation component in Symfony. The PDOSessionHandler class allows storing sessions on a PDO connection. Under some configurations and with a well-crafted payload, it was possible to do a denial of service on a Symfony application without too much resources.

An issue was discovered in the Ldap component in Symfony. It allows remote attackers to bypass authentication by logging in with a null password and valid username, which triggers an unauthenticated bind.

By default, a user's session is invalidated when the user is logged out. This behavior can be disabled through the invalidate_session option. In this case, CSRF tokens were not erased during logout which allowed for CSRF token fixation.

There's a flaw in LdapBindAuthenticationProvider that allows for an unauthorized access on a misconfigured LDAP server when using an empty password. Applications are affected only if they use the LDAP authentication provider.

When an authentication form is submitted by the user and if the user does not exist, the submitted username is stored in the session. If an attacker submit multiple requests with large usernames, he can potentially fill up the session storage.

The nextBytes function in the SecureRandom class does not properly generate random numbers when used with PHP without the paragonie/random_compat library and the openssl_random_pseudo_bytes function fails, which makes it easier for attackers to defeat cryptographic protection mechanisms via unspecified vectors.

Session fixation vulnerability in the Remember Me login feature in Symfony allows remote attackers to hijack web sessions via a session id.

Symfony allows remote attackers to have unspecified impact via a timing attack.

Applications with ESI support (and SSI support as of Symfony ) enabled and using the Symfony built-in reverse proxy (the Symfony\Component\HttpKernel\HttpCache class) are vulnerable to PHP code injection; a malicious user can inject PHP code that will be executed by the server.

FragmentListener in the HttpKernel component in Symfony, when ESI or SSI support enabled, does not check if the _controller attribute is set, which allows remote attackers to bypass URL signing and security rules by including (1) no hash or (2) an invalid hash in a request to /_fragment.

The Symfony\Component\HttpFoundation\Request class provides a mechanism that ensures it does not trust HTTP header values coming from a "non-trusted" client. Unfortunately, it assumes that the remote address is always a trusted client if at least one trusted proxy is involved in the request; this allows a man-in-the-middle attack between the latest trusted proxy and the web server. The following methods are impacted: getPort(), isSecure(), getHost() and getClientIps().

The Security component in Symfony allows remote attackers to cause a denial of service (CPU consumption) via a long password that triggers an expensive hash computation.

Denial of service with a malicious HTTP Host header.

Direct access of ESI URLs behind a trusted proxy

Security issue when parsing the Authorization header.

CSRF vulnerability in the Web Profiler.

Code injection in the way Symfony implements translation caching in FrameworkBundle.

Symfony allows remote attackers to execute arbitrary PHP code via a serialized PHP object to the (1) Yaml::parse or (2) Yaml arser::parse function.

The Yaml::parse function in Symfony allows remote attackers to execute arbitrary PHP code via a PHP file.

Request::getHost() poisoning vulnerability in Symfony.

Symfony does not process URL encoded data consistently within the Routing and Security components, which allows remote attackers to bypass intended URI restrictions via a doubly encoded string.

Symfony, when the internal routes configuration is enabled, allows remote attackers to access arbitrary services via vectors involving a URI beginning with a /_internal substring.

Request::getClientIp() when the trust proxy mode is enabled.

Vulnerability in the EntityUserProvider as provided in the Doctrine bridge.

Security fixes related to the way XML is handled.

XML decoding attack vector through external entities.