Is CVE-2018-14599 in the CISA KEV catalog?

No. CVE-2018-14599 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-14599?

CVE-2018-14599 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-14599?

CVE-2018-14599 has an EPSS score of 4.80% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-14599?

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-2018-14599

CRITICALEPSS 91th pctl

9.8

CVSS v3

NVD

Description

An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other impact.

CWE-193

How to fix

Remediation Available

libx11Debian

Fixed in:2:1.6.6-1CVE-2018-14599

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.80%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch2

Third-Party Advisory9

Other references1

lists.fedoraproject.org

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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.