What is the CVSS score of CVE-2019-16869?

CVE-2019-16869 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 8.4%.

Is there a public PoC exploit available for CVE-2019-16869?

Yes, a public proof-of-concept exploit is available for CVE-2019-16869. Prioritise patching immediately. EPSS: 8.4%.

Is there a patch available for CVE-2019-16869?

Yes, a patch is available for CVE-2019-16869. Update the affected software to the latest version immediately.

Debian Linux CVE-2019-16869

HIGH

HTTP Request/Response Smuggling (CWE-444)

2019-09-26 cve@mitre.org

Information Disclosure Debian Red Hat Canonical Request Smuggling Debian Linux Jboss Enterprise Application Platform Ubuntu Linux Netty

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Sep 26, 2019 - 16:15 nvd

HIGH 7.5

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

4 maven packages depend on io.netty:netty (4 direct, 0 indirect)
10 maven packages depend on io.netty:netty-all (2 direct, 8 indirect)
28 maven packages depend on org.jboss.netty:netty (13 direct, 15 indirect)

Ecosystem-wide dependent count for version 3.3.0.Final and other introduced versions.

DescriptionNVD

Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.

AnalysisAI

Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as HTTP Request/Response Smuggling (CWE-444), which allows attackers to manipulate HTTP request interpretation between frontend and backend servers. Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling. Affected products include: Netty, Debian Debian Linux, Canonical Ubuntu Linux, Redhat Jboss Enterprise Application Platform. Version information: before 4.1.42..

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Enforce strict HTTP parsing, normalize requests at proxy layer, use HTTP/2 end-to-end, reject ambiguous headers.