Symfony Validator Vulnerability: Tricking Validators with `$` Metacharacters
CVE-2024-50343

3.1LOW

Key Information:

Vendor

Symfony

Status
Symfony
Vendor
CVE Published:
6 November 2024

What is CVE-2024-50343?

symfony/validator is a module for the Symphony PHP framework which provides tools to validate values. It is possible to trick a Validator configured with a regular expression using the $ metacharacters, with an input ending with \n. Symfony as of versions 5.4.43, 6.4.11, and 7.1.4 now uses the D regex modifier to match the entire input. Users are advised to upgrade. There are no known workarounds for this vulnerability.

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Affected Version(s)

symfony < 5.4.43 < 5.4.43

symfony >= 6.0.0, < 6.4.11 < 6.0.0, 6.4.11

symfony >= 7.0.0, < 7.1.4 < 7.0.0, 7.1.4

References

https://github.com/symfony/symfony/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/symfony/symfony/commit/7d1032bbead9a42...
x_refsource_MISC

CVSS V3.1

Score:
3.1
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

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