Vulnerability Description
Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 68.4.1 |
| Mozilla | Thunderbird | < 68.4.1 |
| Canonical | Ubuntu Linux | 16.04 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-ConfusExploitThird Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1607443Issue Tracking
- https://security.gentoo.org/glsa/202003-02Third Party Advisory
- https://usn.ubuntu.com/4335-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-03/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-04/Vendor Advisory
- http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-ConfusExploitThird Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1607443Issue Tracking
- https://security.gentoo.org/glsa/202003-02Third Party Advisory
- https://usn.ubuntu.com/4335-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-03/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-04/Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-US Government Resource
FAQ
What is CVE-2019-17026?
CVE-2019-17026 is a vulnerability with a CVSS score of 8.8 (HIGH). Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affe...
How severe is CVE-2019-17026?
CVE-2019-17026 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-17026?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Thunderbird, Canonical Ubuntu Linux.