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Improper Input Validation in Symfony

Critical severity GitHub Reviewed Published Feb 12, 2020 to the GitHub Advisory Database • Updated Jan 9, 2023

Package

composer symfony/symfony (Composer)

Affected versions

>= 4.2.0, < 4.2.12
>= 4.3.0, < 4.3.8

Patched versions

4.2.12
4.3.8
composer symfony/var-exporter (Composer)
>= 4.2.0, < 4.2.12
>= 4.3.0, < 4.3.8
4.2.12
4.3.8
Reviewed Feb 11, 2020
Published to the GitHub Advisory Database Feb 12, 2020
Last updated Jan 9, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.991%
(84th percentile)

Weaknesses

CVE ID

CVE-2019-11325

GHSA ID

GHSA-w4rc-rx25-8m86

Source code

No known source code
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