CVE-2019-16869

Aliases:GHSA-p979-4mfw-53vg
Advisory lineage Upstream: 0 Downstream: 12
Modified
Published: 26 Sept 2019, 15:28
Last modified:07 Jul 2025, 16:57

Vulnerability Summary

Overall Risk (default)
medium
43/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
15.33% MEDIUM
15% probability +12.33%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

26 Sept 2019, 15:28
Published
Vulnerability first disclosed
07 Jul 2025, 16:57
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 15.33%• Percentile: 95%

Techniques & Countermeasures

  • CWE-444•Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

    The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Affected Systems

  • canonical•ubuntu_linux

    18.04

  • debian•debian_linux

    8.0 | 9.0 | 10.0

  • io.netty•netty-all

    ≥ 4.0.0.Alpha1, < 4.1.42.Final

  • org.jboss.netty•netty

    all

  • netty•netty

    < 4.1.42

  • redhat•jboss_enterprise_application_platform

    7.2 | 7.3 | 7.4

References (149)