CVE-2019-11757

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.

Published: Jan 8, 2020
Updated: Apr 13, 2023
CVE: CVE-2019-11757
Severity: High
Exploit:

CVSS v3:

Severity: High
Score: 8.8
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2:

Severity: Medium
Score: 6.8
AV:N/AC:M/Au:N/C:P/I:P/A:P

CWEs:

CWE-416

Affected Software
References

Software	From	Fixed in
mozilla / firefox_esr	-	68.2
mozilla / thunderbird	-	68.2
mozilla / firefox	-	70.0
canonical / ubuntu_linux	16.04	16.04.x

https://bugzilla.mozilla.org/show_bug.cgi?id=1577107
https://security.gentoo.org/glsa/202003-10
https://usn.ubuntu.com/4335-1/
https://www.mozilla.org/security/advisories/mfsa2019-33/
https://www.mozilla.org/security/advisories/mfsa2019-34/
https://www.mozilla.org/security/advisories/mfsa2019-35/

Vulnerability Database

CVE-2019-11757