vulnerability

Ubuntu: (Multiple Advisories) (CVE-2019-11761): Firefox vulnerabilities

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Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Oct 23, 2019
Added
Oct 24, 2019
Modified
Mar 27, 2026

Description

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Solutions

ubuntu-upgrade-firefoxubuntu-upgrade-thunderbird

References

    Title
    Rapid7 Labs

    2026 Global Threat Landscape Report

    The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.