Is CVE-2018-14598 in the CISA KEV catalog?

No. CVE-2018-14598 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-14598?

CVE-2018-14598 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2018-14598?

CVE-2018-14598 has an EPSS score of 4.23% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-14598?

Upgrade libx11 on debian 11 to 2:1.6.6-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2018-14598

HIGHEPSS 90th pctl

7.5

CVSS v3

NVD

Description

An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault).

CWE-20Improper Input Validation

How to fix

Remediation Available

libx11Debian

Fixed in:2:1.6.6-1CVE-2018-14598

libx11Ubuntu

Fixed in:2:1.6.2-1ubuntu2.1USN-3758-1

Fixed in:2:1.6.3-1ubuntu2.1USN-3758-1

Fixed in:2:1.6.4-3ubuntu0.1USN-3758-1

libx11-6Ubuntu

Fixed in:2:1.6.2-1ubuntu2.1USN-3758-1

Fixed in:2:1.6.3-1ubuntu2.1USN-3758-1

Fixed in:2:1.6.4-3ubuntu0.1USN-3758-1

libx11-devUbuntu

Fixed in:2:1.6.2-1ubuntu2.1USN-3758-1

Fixed in:2:1.6.3-1ubuntu2.1USN-3758-1

Fixed in:2:1.6.4-3ubuntu0.1USN-3758-1

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

4.23%probability of exploitation in 30 days

90thpercentile

Elevated risk: more likely to be exploited than 90% of all known CVEs.

References

Patch2

Third-Party Advisory8

Other references2

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	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.