Is CVE-2019-17569 in the CISA KEV catalog?

No. CVE-2019-17569 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-17569?

CVE-2019-17569 has a CVSS v3 base score of 4.8 (MEDIUM).

What is the EPSS score for CVE-2019-17569?

CVE-2019-17569 has an EPSS score of 8.87% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-17569?

Upgrade tomcat9 on debian 11 to 9.0.31-1 or later.

CVE & CISA-KEV Catalog

CVE-2019-17569

MEDIUMEPSS 95th pctl

4.8

CVSS v3

NVD

Description

The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.

CWE-444

How to fix

Remediation Available

tomcat9Debian

Fixed in:9.0.31-1CVE-2019-17569

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

8.87%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Patch3

Vendor Advisory1

lists.apache.org

Third-Party Advisory5

Other references2

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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.