Package Instance

Symfony vulnerable to command execution hijack on Windows with Process class
### Description

On Windows, when an executable file named `cmd.exe` is located in the current working directory it will be called by the `Process` class when preparing command arguments, leading to possible hijacking.

### Resolution

The `Process` class now uses the absolute path to `cmd.exe`.

The patch for this issue is available [here](https://github.com/symfony/symfony/commit/18ecd03eda3917fdf901a48e72518f911c64a1c9) for branch 5.4.

### Credits

We would like to thank Jordi Boggiano for reporting the issue and Nicolas Grekas for providing the fix.

Symfony allows internal address and port enumeration by NoPrivateNetworkHttpClient
### Description

When using the `NoPrivateNetworkHttpClient`, some internal information is still leaking during host resolution, which leads to possible IP/port enumeration.

### Resolution

The `NoPrivateNetworkHttpClient` now filters blocked IPs earlier to prevent such leaks.

The fisrt patch for this issue is available [here](https://github.com/symfony/symfony/commit/296d4b34a33b1a6ca5475c6040b3203622520f5b) for branch 5.4.

The second one is available [here](https://github.com/symfony/symfony/commit/b4bf5afdbdcb2fd03da513ee03beeabeb551e5fa) for branch 5.4 also.

### Credits

We would like to thank Linus Karlsson and Chris Smith for reporting the issue and Nicolas Grekas for providing the fix.

Symfony vulnerable to open redirect via browser-sanitized URLs
### Description

The `Request` class, does not parse URI with special characters the same way browsers do. As a result, an attacker can trick a validator relying on the `Request` class to redirect users to another domain.

### Resolution

The `Request::create` methods now assert the URI does not contain invalid characters as defined by https://url.spec.whatwg.org/

The patch for this issue is available [here](https://github.com/symfony/symfony/commit/5a9b08e5740af795854b1b639b7d45b9cbfe8819) for branch 5.4.

### Credits

We would like to thank Sam Mush - IPASSLab && ZGC Lab for reporting the issue and Nicolas Grekas for providing the fix.

Symfony potential Cross-site Scripting vulnerabilities in CodeExtension filters
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 has an incorrect response from Validator when input ends with `\n`
### Description

It is possible to trick a `Validator` configured with a regular expression using the `$` metacharacters, with an input ending with `\n`.

### Resolution

Symfony now uses the `D` regex modifier to match the entire input.

The patch for this issue is available [here](https://github.com/symfony/symfony/commit/7d1032bbead9a4229b32fa6ebca32681c80cb76f) for branch 5.4.

### Credits

We would like to thank Offscript for reporting the issue and Alexandre Daubois for providing the fix.

Symfony allows changing the environment through a query
### Description

When the `register_argc_argv` php directive is set to `on` , and users call any URL with a special crafted query string, they are able to change the environment or debug mode used by the kernel when handling the request.

### Resolution

The `SymfonyRuntime` now ignores the `argv` values for non-cli SAPIs PHP runtimes

The patch for this issue is available [here](https://github.com/symfony/symfony/commit/a77b308c3f179ed7c8a8bc295f82b2d6ee3493fa) for branch 5.4.

### Credits

We would like to thank Vladimir Dusheyko for reporting the issue and Wouter de Jong for providing the fix.

Symfony's incorrect parsing of PATH_INFO can lead to limited authorization bypass
The `Request` class improperly interprets some `PATH_INFO` in a way that leads to representing some URLs with a path that doesn't start with a `/`. This can allow bypassing some access control rules that are built with this `/`-prefix assumption.

Cross-Site Request Forgery (CSRF)
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 default, the mechanism is enabled as long as the session is enabled. In a recent change in the way the configuration is loaded, the default behavior has been dropped and, as a result, the CSRF protection is not enabled in form when not explicitly enabled, which makes the application sensible to CSRF attacks. This issue has been resolved in the patch versions listed and users are advised to update. There are no known workarounds for this issue.

Duplicate
This advisory duplicates another.