CVE-2017-7789
UnknownEPSS 1.78%
Last modified
CVE-2017-7789 is a vulnerability of currently unknown severity. If a server sends two Strict-Transport-Security (STS) headers for a single connection, they will be rejected as invalid and HTTP Strict Transport Security (HSTS) will not be enabled for the connection. This vulnerability affects Firefox < 55.. EPSS estimates a 1.78% chance of exploitation in the next 30 days.
Description
If a server sends two Strict-Transport-Security (STS) headers for a single connection, they will be rejected as invalid and HTTP Strict Transport Security (HSTS) will not be enabled for the connection. This vulnerability affects Firefox < 55.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 55.0 |
References
- http://www.securityfocus.com/bid/100374Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039124Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1074642Exploit, Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
- http://www.securityfocus.com/bid/100374Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039124Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1074642Exploit, Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-7789?
If a server sends two Strict-Transport-Security (STS) headers for a single connection, they will be rejected as invalid and HTTP Strict Transport Security (HSTS) will not be enabled for the connection. This vulnerability affects Firefox < 55.
How severe is CVE-2017-7789?
Severity scoring for CVE-2017-7789 is pending analysis. The EPSS model estimates a 1.78% probability of exploitation in the next 30 days.
How do I fix CVE-2017-7789?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2017
- CVE-2017-7783If a long user name is used in a username/password combinati…
- CVE-2017-7784A use-after-free vulnerability can occur when reading an ima…
- CVE-2017-7785A buffer overflow can occur when manipulating Accessible Ric…
- CVE-2017-7786A buffer overflow can occur when the image renderer attempts…
- CVE-2017-7787Same-origin policy protections can be bypassed on pages with…
- CVE-2017-7788When an "iframe" has a "sandbox" attribute and its content i…
- CVE-2017-7790On Windows systems, if non-null-terminated strings are copie…
- CVE-2017-7791On pages containing an iframe, the "data:" protocol can be u…
- CVE-2017-7792A buffer overflow will occur when viewing a certificate in t…
- CVE-2017-7793A use-after-free vulnerability can occur in the Fetch API wh…
- CVE-2017-7794On Linux systems, if the content process is compromised, the…
- CVE-2017-7796On Windows systems, the logger run by the Windows updater de…
Are you affected by CVE-2017-7789?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST