CVE-2019-18886
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
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.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-18886
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 4.3.8+dfsg-1 |
| debian | bullseye | fixed | 4.3.8+dfsg-1 |
| debian | forky | fixed | 4.3.8+dfsg-1 |
| debian | sid | fixed | 4.3.8+dfsg-1 |
| debian | trixie | fixed | 4.3.8+dfsg-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | symfony/security-http | >=4.1.0,<4.2.12 | 4.2.12 |
| Packagist | symfony/security-http | >=4.3.0,<4.3.8 | 4.3.8 |
| Packagist | symfony/symfony | >=4.1.0,<4.2.12 | 4.2.12 |
| Packagist | symfony/symfony | >=4.3.0,<4.3.8 | 4.3.8 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-18886
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2019-18886.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-18886.yaml
- 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://symfony.com/cve-2019-18886
- https://security-tracker.debian.org/tracker/CVE-2019-18886
Verify integrity in audit chain (admin only). AS-IS.