CVE-2019-17017
HIGHCVSS 8.8/10EPSS 2.49%
Last modified
CVE-2019-17017 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. EPSS estimates a 2.49% chance of exploitation in the next 30 days.
Description
Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 72.0 |
| Mozilla | Firefox Esr | < 68.4 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 19.04 |
| Canonical | Ubuntu Linux | 19.10 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.7 |
| Redhat | Enterprise Linux Server Tus | 7.7 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Redhat | Enterprise Linux Workstation | 7.0 |
References
- https://access.redhat.com/errata/RHSA-2020:0085Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0086Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1603055Permissions Required
- https://lists.debian.org/debian-lts-announce/2020/01/msg00005.htmlMailing List, Third Party Advisory
- https://seclists.org/bugtraq/2020/Jan/12Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2020/Jan/18Third Party Advisory
- https://usn.ubuntu.com/4234-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4600Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-02/Vendor Advisory
- https://access.redhat.com/errata/RHSA-2020:0085Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0086Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1603055Permissions Required
- https://lists.debian.org/debian-lts-announce/2020/01/msg00005.htmlMailing List, Third Party Advisory
- https://seclists.org/bugtraq/2020/Jan/12Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2020/Jan/18Third Party Advisory
- https://usn.ubuntu.com/4234-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4600Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-02/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-17017?
Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
How severe is CVE-2019-17017?
CVE-2019-17017 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.49% probability of exploitation in the next 30 days.
How do I fix CVE-2019-17017?
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.
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Are you affected by CVE-2019-17017?
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