Home/CVE/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 implemen
CVE

CVE-2017-16653

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 implemen

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.

MEDIUM · CVSS 5.9 EPSS 0.00325
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
▤

Affected Products & Versions

5
sensiolabs symfony>= 2.7.0 and <= 2.7.37
sensiolabs symfony>= 3.2.0 and <= 3.2.13
sensiolabs symfony>= 3.3.0 and <= 3.3.12
sensiolabs symfony>= 3.8.0 and <= 3.8.30
debian linuxall versions
▤

Affected Packages

3
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist symfony/security MEDIUM fixed in 2.7.38
Packagist symfony/security-csrf MEDIUM fixed in 2.7.38
Packagist symfony/symfony MEDIUM fixed in 2.7.38
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Aug 2018 · 09:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/symfony/symfony/pull/24992Issue TrackingThird Party Advisory
https://symfony.com/blog/cve-2017-16653-csrf-protection-does-not-use-different-tokens-for-http-and-httpsIssue TrackingThird Party Advisory
https://www.debian.org/security/2018/dsa-4262Third Party Advisory
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