CVE-2017-16653
Symfony CSRF Vulnerability
5.9
MEDIUM
CVSS 3.1
EPSS 0.33%
Description
An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The current implementation of CSRF protection in Symfony (Version >=2) does not use different tokens for HTTP and HTTPS; therefore the token is subject to MITM attacks on HTTP and can then be used in an HTTPS context to do CSRF attacks.
How to fix CVE-2017-16653
To remediate CVE-2017-16653, upgrade the affected package to a fixed version below.
- —upgrade to 3.4.0+dfsg-1 or later
- —upgrade to 2.7.38 or later
- —upgrade to 2.7.38 or later
- —upgrade to 2.7.38 or later
Is CVE-2017-16653 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 3.4.0+dfsg-1
- >= 2.7.0, < 2.7.38
- >= 2.7.0, < 2.7.38
- >= 2.7.0, < 2.7.38
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |