User Enumeration Vulnerability in Symfony Framework by Symfony
CVE-2019-18886

5.3MEDIUM

Key Information:

Vendor
Sensiolabs
Status
Symfony
Vendor
CVE Published:
21 November 2019

Summary

A user enumeration vulnerability was identified in Symfony that affects versions 4.2.0 through 4.2.11 and 4.3.0 through 4.3.7. This flaw arises from inconsistent behavior during unauthorized attempts to use the switch user functionality, allowing attackers to discern whether a user exists based on the system's responses. This could potentially enable malicious actors to gain insights into user accounts within a vulnerable application, compromising the integrity and security of the system. It is crucial for developers using Symfony to upgrade to the latest versions to mitigate this risk.

References

https://github.com/symfony/symfony/releases/tag/v4.3.8
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https://symfony.com/blog/symfony-4-3-8-released
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https://symfony.com/blog/cve-2019-18886-prevent-user-enum...
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CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2019-18886 : User Enumeration Vulnerability in Symfony Framework by Symfony | SecurityVulnerability.io