Is CVE-2018-14647 in the CISA KEV catalog?

No. CVE-2018-14647 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-14647?

CVE-2018-14647 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2018-14647?

CVE-2018-14647 has an EPSS score of 11.30% (96th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-14647?

Upgrade python2.7 on debian 11 to 2.7.15-5 or later. Fixes are available for 21 affected products.

CVE & CISA-KEV Catalog

CVE-2018-14647

HIGHEPSS 96th pctl

7.5

CVSS v3

NVD

Description

Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.

CWE-335 CWE-665 CWE-909

How to fix

Remediation Available

python2.7Debian

Fixed in:2.7.15-5CVE-2018-14647

python2.7Ubuntu

Fixed in:2.7.6-8ubuntu0.5USN-3817-1

Fixed in:2.7.12-1ubuntu0~16.04.4USN-3817-1

Fixed in:2.7.15~rc1-1ubuntu0.1USN-3817-1

python2.7-minimalUbuntu

Fixed in:2.7.6-8ubuntu0.5USN-3817-1

Fixed in:2.7.12-1ubuntu0~16.04.4USN-3817-1

Fixed in:2.7.15~rc1-1ubuntu0.1USN-3817-1

python3.10Ubuntu

Fixed in:3.10.12-1~22.04.4USN-6891-1

python3.10-minimalUbuntu

Fixed in:3.10.12-1~22.04.4USN-6891-1

python3.11Ubuntu

Fixed in:3.11.0~rc1-1~22.04.1~esm1USN-6891-1

Fixed in:3.11.6-3ubuntu0.1USN-6891-1

python3.11-minimalUbuntu

Fixed in:3.11.0~rc1-1~22.04.1~esm1USN-6891-1

Fixed in:3.11.6-3ubuntu0.1USN-6891-1

python3.12Ubuntu

Fixed in:3.12.0-1ubuntu0.1USN-6891-1

python3.12-minimalUbuntu

Fixed in:3.12.0-1ubuntu0.1USN-6891-1

python3.4Ubuntu

Fixed in:3.4.3-1ubuntu1~14.04.7USN-3817-1

python3.4-minimalUbuntu

Fixed in:3.4.3-1ubuntu1~14.04.7USN-3817-1

python3.5Ubuntu

Fixed in:3.5.2-2ubuntu0~16.04.4~14.04.1+esm1USN-6891-1

Fixed in:3.5.2-2ubuntu0~16.04.13+esm13USN-6891-1

Fixed in:3.5.2-2ubuntu0~16.04.5USN-3817-1

python3.5-minimalUbuntu

Fixed in:3.5.2-2ubuntu0~16.04.4~14.04.1+esm1USN-6891-1

Fixed in:3.5.2-2ubuntu0~16.04.13+esm13USN-6891-1

Fixed in:3.5.2-2ubuntu0~16.04.5USN-3817-1

python3.6Ubuntu

Fixed in:3.6.9-1~18.04ubuntu1.13+esm2USN-6891-1

python3.6-minimalUbuntu

Fixed in:3.6.9-1~18.04ubuntu1.13+esm2USN-6891-1

python3.7Ubuntu

Fixed in:3.7.5-2ubuntu1~18.04.2+esm3USN-6891-1

python3.7-minimalUbuntu

Fixed in:3.7.5-2ubuntu1~18.04.2+esm3USN-6891-1

python3.8Ubuntu

Fixed in:3.8.0-3ubuntu1~18.04.2+esm2USN-6891-1

Fixed in:3.8.10-0ubuntu1~20.04.10USN-6891-1

python3.8-minimalUbuntu

Fixed in:3.8.0-3ubuntu1~18.04.2+esm2USN-6891-1

Fixed in:3.8.10-0ubuntu1~20.04.10USN-6891-1

python3.9Ubuntu

Fixed in:3.9.5-3ubuntu0~20.04.1+esm2USN-6891-1

python3.9-minimalUbuntu

Fixed in:3.9.5-3ubuntu0~20.04.1+esm2USN-6891-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

Exploit Intelligence

11.30%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Patch1

bugs.python.org

Third-Party Advisory13

Other references2

Related Vulnerabilities

Other CWE-335 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-12520	High	8.1	11%	-	Fix
CVE-2016-10180	High	7.5	4.4%	-	-
CVE-2021-27211	High	7.5	3.3%	-	-
CVE-2017-11519	Critical	9.8	3.1%	-	-
CVE-2021-41117	High	8.7	3.0%	-	Fix
CVE-2018-1426	High	7.4	2.5%	-	-

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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.