CVE-2019-11757

high

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.

References

https://www.mozilla.org/security/advisories/mfsa2019-35/

https://www.mozilla.org/security/advisories/mfsa2019-34/

https://www.mozilla.org/security/advisories/mfsa2019-33/

https://usn.ubuntu.com/4335-1/

https://security.gentoo.org/glsa/202003-10

https://bugzilla.mozilla.org/show_bug.cgi?id=1577107

Details

Source: Mitre, NVD

Published: 2020-01-08

Updated: 2023-02-01

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High