CVE-2019-11707

Known Exploited

Description

A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 60.7.1, Firefox < 67.0.3, and Thunderbird < 60.7.2.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 83.22% Top 5%
KEV Since 
Vendor Advisory gentoo.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2019-20/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-18/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1544386 issue tracking permissions required vendor advisory
https://security.gentoo.org/glsa/201908-12 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-11707?
CVE-2019-11707 has been scored as a high severity vulnerability.
How to fix CVE-2019-11707?
To fix CVE-2019-11707, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-11707 being actively exploited in the wild?
It is confirmed that CVE-2019-11707 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~83% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11707?
CVE-2019-11707 affects Mozilla Firefox ESR, Mozilla Firefox, Mozilla Thunderbird.
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