CVE & CISA-KEV Catalog

CVE-2018-1336

HIGHEPSS 97th pctl

7.5

CVSS v3

Description

An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86.

How to fix

Remediation Available

libservlet3.0-javaUbuntu

Fixed in:7.0.68-1ubuntu0.4+esm1USN-4791-1

libtomcat7-javaUbuntu

Fixed in:7.0.52-1ubuntu0.15USN-3723-1

Fixed in:7.0.68-1ubuntu0.4+esm1USN-4791-1

libtomcat8-javaUbuntu

Fixed in:8.0.32-1ubuntu1.7USN-3723-1

tomcat7Ubuntu

Fixed in:7.0.52-1ubuntu0.15USN-3723-1

Fixed in:7.0.68-1ubuntu0.4+esm1USN-4791-1

tomcat7-adminUbuntu

Fixed in:7.0.68-1ubuntu0.4+esm1USN-4791-1

tomcat7-commonUbuntu

Fixed in:7.0.68-1ubuntu0.4+esm1USN-4791-1

tomcat7-userUbuntu

Fixed in:7.0.68-1ubuntu0.4+esm1USN-4791-1

tomcat8Ubuntu

Fixed in:8.0.32-1ubuntu1.7USN-3723-1

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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

20.60%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Related Vulnerabilities

Other CWE-835 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13935	High	7.5	88%	-	Fix
CVE-2020-36227	High	7.5	78%	-	Fix
CVE-2024-20353	High	8.6	71%	KEV	-
CVE-2022-0778	High	7.5	71%	-	Fix
CVE-2019-14241	High	7.5	70%	-	-
CVE-2017-16944	High	7.5	63%	-	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.