Medium severity · published Aug 6, 2018
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
5.9
CVSS
1.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0 · source: NVD
SY
Symfony · Sensiolabs
2.7.0 through 2.7.37; 3.2.0 through 3.2.13; 3.3.0 through 3.3.12; 3.8.0 through 3.8.30 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-16653
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-16653
Issue Tracking
https://github.com/symfony/symfony/pull/24992
Issue Tracking
https://symfony.com/blog/cve-2017-16653-csrf-protection-does-not-use-different-tokens-for-http-and-https
Third Party Advisory
https://www.debian.org/security/2018/dsa-4262
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