Is CVE-2017-18640 in the CISA KEV catalog?

No. CVE-2017-18640 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-18640?

CVE-2017-18640 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2017-18640?

CVE-2017-18640 has an EPSS score of 26.72% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-18640?

Upgrade snakeyaml on debian 11 to 1.25+ds-3 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2017-18640

HIGHEPSS 98th pctl

7.5

CVSS v3

NVD

Description

The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564.

CWE-776

How to fix

Remediation Available

snakeyamlDebian

Fixed in:1.25+ds-3CVE-2017-18640

libyaml-snake-javaUbuntu

Fixed in:1.12-2ubuntu0.14.04.1~esm2USN-7368-1

Fixed in:1.12-2ubuntu0.16.04.1~esm2USN-7368-1

Fixed in:1.23-1+deb10u1ubuntu0.1~esm1USN-7368-1

Fixed in:1.25+ds-2ubuntu0.1+esm1USN-7368-1

snakeyamlUbuntu

Fixed in:1.12-2ubuntu0.14.04.1~esm2USN-7368-1

Fixed in:1.12-2ubuntu0.16.04.1~esm2USN-7368-1

Fixed in:1.23-1+deb10u1ubuntu0.1~esm1USN-7368-1

Fixed in:1.25+ds-2ubuntu0.1+esm1USN-7368-1

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

26.72%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Patch1

bitbucket.org

Exploit1

bitbucket.org

Third-Party Advisory2

Other references46

Related Vulnerabilities

Other CWE-776 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-1955	High	7.5	53%	-	Fix
CVE-2019-11253	High	7.5	26%	-	Fix
CVE-2019-12401	High	7.5	7.5%	-	-
CVE-2023-20052	Medium	5.3	7.0%	-	Fix
CVE-2019-15903	High	7.5	6.7%	-	Fix
CVE-2021-23926	Critical	9.1	6.2%	-	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.