HOMEVULNERABILITIESCVE-2017-16653
MEDIUM

CVE-2017-16653

NVD-CWE-noinfoPublished: August 6, 2018· Updated: Jun 17, 2026

5.9
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2017-16653 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

Debian1 product(s)
debian linux
sensiolabs1 product(s)
symfony
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/symfony/symfony/pull/24992
ADVISORYhttps://symfony.com/blog/cve-2017-16653-csrf-protection-does-not-use-different-tokens-for-http-and-https
ADVISORYhttps://www.debian.org/security/2018/dsa-4262
ADVISORYhttps://github.com/symfony/symfony/pull/24992
ADVISORYhttps://symfony.com/blog/cve-2017-16653-csrf-protection-does-not-use-different-tokens-for-http-and-https
ADVISORYhttps://www.debian.org/security/2018/dsa-4262

All References (6)

→
https://github.com/symfony/symfony/pull/24992Issue Tracking · Third Party Advisory
→
https://symfony.com/blog/cve-2017-16653-csrf-protection-does-not-use-different-tokens-for-http-and-httpsIssue Tracking · Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4262Third Party Advisory
→
https://github.com/symfony/symfony/pull/24992Issue Tracking · Third Party Advisory
→
https://symfony.com/blog/cve-2017-16653-csrf-protection-does-not-use-different-tokens-for-http-and-httpsIssue Tracking · Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4262Third Party Advisory

Quick Facts

CVE IDCVE-2017-16653
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected2 vendor(s)
PublishedAug 6, 2018

Related CVEs (NVD-CWE-noinfo)

CVE-2007-5530
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CVE-2007-5531
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CVE-2007-5526
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CVE-2007-5528
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CVE-2007-5483
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CVE-2007-5476
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-16653 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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