Is CVE-2019-9811 in the CISA KEV catalog?

No. CVE-2019-9811 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-9811?

CVE-2019-9811 has a CVSS v3 base score of 8.3 (HIGH).

What is the EPSS score for CVE-2019-9811?

CVE-2019-9811 has an EPSS score of 2.57% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-9811?

Upgrade firefox on debian unstable to 68.0-1 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2019-9811

HIGHEPSS 83th pctl

8.3

CVSS v3

NVD

Description

As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a browser feature that used the compromised translation. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

CWE-74Injection

How to fix

Remediation Available

firefoxDebian

Fixed in:68.0-1CVE-2019-9811

firefoxUbuntu

Fixed in:68.0+build3-0ubuntu0.16.04.1USN-4054-1

Fixed in:68.0+build3-0ubuntu0.18.04.1USN-4054-1

thunderbirdUbuntu

Fixed in:1:60.8.0+build1-0ubuntu0.16.04.2USN-4064-1

Fixed in:1:60.8.0+build1-0ubuntu0.18.04.1USN-4064-1

DeveloperEditionWindows application

Affected:68.0Fixed in:68.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:68.0Fixed in:68.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:60.8Fixed in:60.8Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:60.8Fixed in:60.8Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Exploit Intelligence

2.57%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch1

bugzilla.mozilla.org

Exploit1

bugzilla.mozilla.org

Vendor Advisory3

Third-Party Advisory9

Issue Tracking1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.