CVE-2019-18887
symfony - security update
8.1
HIGH
CVSS 3.1
EPSS 0.81%
Description
An issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. The UriSigner was subject to timing attacks. This is related to symfony/http-kernel.
How to fix CVE-2019-18887
To remediate CVE-2019-18887, upgrade the affected package to a fixed version below.
- Debian/symfony—upgrade to 4.3.8+dfsg-1 or later
- —upgrade to 2.8.7+dfsg-1.3+deb9u3 or later
- —upgrade to 2.8.52 or later
- —upgrade to 2.8.52 or later
Is CVE-2019-18887 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 4.3.8+dfsg-1
- from 0, < 2.8.7+dfsg-1.3+deb9u3
- >= 2.2.0, < 2.8.52
- >= 2.2.0, < 2.8.52
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |