CVE-2019-18886

EUVD-2019-0777
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 81%
Affected Products (NVD)
VendorProductVersion
sensiolabssymfony
4.2.0 ≤
𝑥
≤ 4.2.11
sensiolabssymfony
4.3.0 ≤
𝑥
≤ 4.3.7
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
symfony
bookworm
5.4.23+dfsg-1+deb12u2
fixed
bullseye
4.4.19+dfsg-2+deb11u6
fixed
buster
not-affected
sid
6.4.13+dfsg-1
fixed
stretch
not-affected
trixie
6.4.13+dfsg-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
symfony
bionic
not-affected
disco
ignored
eoan
ignored
focal
not-affected
groovy
not-affected
hirsute
not-affected
impish
not-affected
jammy
not-affected
trusty
dne
xenial
not-affected
Common Weakness Enumeration
References
https://github.com/symfony/symfony/releases/tag/v4.3.8
https://symfony.com/blog/cve-2019-18886-prevent-user-enumeration-using-switch-user-functionality
https://symfony.com/blog/symfony-4-3-8-released
https://github.com/symfony/symfony/releases/tag/v4.3.8
https://symfony.com/blog/cve-2019-18886-prevent-user-enumeration-using-switch-user-functionality
https://symfony.com/blog/symfony-4-3-8-released