GitHub Advisory DatabaseGHSA-VVMR-8829-6WHXCSRF token missing in Symfony
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
41.8%
Description
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.
Resolution
Symfony restored the default configuration to enable the CSRF protection by default.
The patch for this issue is available here for branch 5.3.
Credits
We would like to thank Catalin Dan and David Lochner for reporting the issue and Jérémy Derussé for fixing the issue.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| symfony/framework-bundle | eq | 6.0.3 | |
| symfony/framework-bundle | eq | 5.4.3 | |
| symfony/framework-bundle | eq | 5.3.14 |
References
github.com/advisories/GHSA-vvmr-8829-6whx
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/framework-bundle/CVE-2022-23601.yaml
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2022-23601.yaml
github.com/symfony/symfony/commit/f0ffb775febdf07e57117aabadac96fa37857f50
github.com/symfony/symfony/security/advisories/GHSA-vvmr-8829-6whx
nvd.nist.gov/vuln/detail/CVE-2022-23601
symfony.com/cve-2022-23601
Related
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
41.8%