Vulnerability Monitor

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CVE-2019-18886

An issue was discovered in Symfony 4.2.0 to 4.2.11 and 4.3.0 to 4.3.7. The ability to enumerate users was possible due to different handling depending on whether the user existed when making unauthorized attempts to use the switch users functionality. This is related to symfony/security.

Published

2019-11-21T18:15:11.820

Last Modified

2024-11-21T04:33:46.837

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-203

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	sensiolabs	symfony	≤ 4.2.11	Yes
Application	sensiolabs	symfony	≤ 4.3.7	Yes

References

https://github.com/symfony/symfony/releases/tag/v4.3.8 Release Notes ([email protected])
https://symfony.com/blog/cve-2019-18886-prevent-user-enumeration-using-switch-user-functionality Vendor Advisory ([email protected])
https://symfony.com/blog/symfony-4-3-8-released Release Notes ([email protected])
https://github.com/symfony/symfony/releases/tag/v4.3.8 Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://symfony.com/blog/cve-2019-18886-prevent-user-enumeration-using-switch-user-functionality Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://symfony.com/blog/symfony-4-3-8-released Release Notes (af854a3a-2127-422b-91ae-364da2661108)