Is CVE-2019-9793 in the CISA KEV catalog?

No. CVE-2019-9793 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-9793?

CVE-2019-9793 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2019-9793?

CVE-2019-9793 has an EPSS score of 1.63% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-9793?

Upgrade firefox on debian unstable to 66.0-1 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2019-9793

MEDIUMEPSS 73th pctl

5.9

CVSS v3

NVD

Description

A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully controlled, incorrect range in circumstances where users have explicitly disabled Spectre mitigations. *Note: Spectre mitigations are currently enabled for all users by default settings.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

CWE-119Buffer Overflow

How to fix

Remediation Available

firefoxDebian

Fixed in:66.0-1CVE-2019-9793

firefoxUbuntu

Fixed in:66.0.1+build1-0ubuntu0.14.04.1USN-3918-2

Fixed in:66.0+build3-0ubuntu0.16.04.2USN-3918-1

Fixed in:66.0+build3-0ubuntu0.18.04.1USN-3918-1

thunderbirdUbuntu

Fixed in:1:60.6.1+build2-0ubuntu0.14.04.1USN-3927-1

Fixed in:1:60.6.1+build2-0ubuntu0.16.04.1USN-3927-1

Fixed in:1:60.6.1+build2-0ubuntu0.18.04.1USN-3927-1

DeveloperEditionWindows application

Affected:66.0Fixed in:66.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:66.0Fixed in:66.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:60.6Fixed in:60.6Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:60.6Fixed in:60.6Mozilla

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.63%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Vendor Advisory4

Other references2

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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.