Is CVE-2017-7811 in the CISA KEV catalog?

No. CVE-2017-7811 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-7811?

CVE-2017-7811 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-7811?

CVE-2017-7811 has an EPSS score of 2.27% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-7811?

Upgrade firefox on debian unstable to 56.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2017-7811

CRITICALEPSS 81th pctl

9.8

CVSS v3

NVD

Description

Memory safety bugs were reported in Firefox 55. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 56.

CWE-119Buffer Overflow

How to fix

Remediation Available

firefoxDebian

Fixed in:56.0-1CVE-2017-7811

firefoxUbuntu

Fixed in:56.0+build6-0ubuntu0.14.04.1USN-3435-1

Fixed in:56.0+build6-0ubuntu0.16.04.1USN-3435-1

DeveloperEditionWindows application

Affected:56.0Fixed in:56.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:56.0Fixed in:56.0Mozilla

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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.27%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Exploit1

bugzilla.mozilla.org

Vendor Advisory1

mozilla.org

Third-Party Advisory2

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.