Is CVE-2017-18187 in the CISA KEV catalog?

No. CVE-2017-18187 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-18187?

CVE-2017-18187 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-18187?

CVE-2017-18187 has an EPSS score of 3.17% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-18187?

Upgrade mbedtls on debian 11 to 2.7.0-2 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2017-18187

CRITICALEPSS 86th pctl

9.8

CVSS v3

NVD

Description

In ARM mbed TLS before 2.7.0, there is a bounds-check bypass through an integer overflow in PSK identity parsing in the ssl_parse_client_psk_identity() function in library/ssl_srv.c.

CWE-190Integer Overflow

How to fix

Remediation Available

mbedtlsDebian

Fixed in:2.7.0-2CVE-2017-18187

libmbedcrypto0Ubuntu

Fixed in:2.2.1-2ubuntu0.3USN-4267-1

libmbedtls10Ubuntu

Fixed in:2.2.1-2ubuntu0.3USN-4267-1

libmbedx509-0Ubuntu

Fixed in:2.2.1-2ubuntu0.3USN-4267-1

mbedtlsUbuntu

Fixed in:2.2.1-2ubuntu0.3USN-4267-1

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

Exploit Intelligence

3.17%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory5

Other references1

usn.ubuntu.com

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	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.