Vulnerability Description
When following the value's prototype chain, it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 70.0 |
| Mozilla | Firefox Esr | < 68.2 |
| Mozilla | Thunderbird | < 68.2 |
| Canonical | Ubuntu Linux | 16.04 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1577107Issue TrackingPermissions Required
- https://security.gentoo.org/glsa/202003-10Third Party Advisory
- https://usn.ubuntu.com/4335-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-33/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-34/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-35/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1577107Issue TrackingPermissions Required
- https://security.gentoo.org/glsa/202003-10Third Party Advisory
- https://usn.ubuntu.com/4335-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-33/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-34/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-35/Vendor Advisory
FAQ
What is CVE-2019-11757?
CVE-2019-11757 is a vulnerability with a CVSS score of 8.8 (HIGH). When following the value's prototype chain, it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable...
How severe is CVE-2019-11757?
CVE-2019-11757 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-2019-11757?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Canonical Ubuntu Linux.