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01 Record

CVE-2019-20445

HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
13.83% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 96.4% of scored records. A rank, not a probability.
NVD base score
9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-10-08.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-01-29 20:33Z6 YR AGO
Last updated
2026-10-08 21:14Z20 DAYS AGO
Reserved
2020-01-29
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')Base
Data version
5.2
Document digest
db254627eaf71fda5f050285c557c86cdacac524bb25cc328b37d16c827472d4

05 Affected products

VendorProductVersionsPlatforms
apachesparkNot specified—
canonicalubuntu_linuxNot specified—
debiandebian_linuxNot specified—
fedoraprojectfedoraNot specified—
nettynettyNot specified—
redhata_mq_clientsNot specified—
redhatamq_brokerNot specified—
redhatamq_onlineNot specified—
redhatamq_streamsNot specified—
redhatenterprise_linuxNot specified—
redhatjboss_amqNot specified—
redhatjboss_amq_clientsNot specified—
redhatjboss_data_gridNot specified—
redhatjboss_enterprise_application_platformNot specified—
redhatjboss_enterprise_application_platform_cdNot specified—
redhatjboss_enterprise_application_platform_eusNot specified—
redhatjboss_enterprise_bpms_platformNot specified—
redhatjboss_enterprise_brms_platformNot specified—
redhatjboss_fuseNot specified—
redhatjboss_operations_networkNot specified—
redhatjboss_single_sign_onNot specified—
redhatopenshiftNot specified—
redhatopenshift_application_runtimesNot specified—
redhatsatelliteNot specified—

06 References

07 Fixed in

Debian 12

  • netty
    Fixed in 1:4.1.45-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • netty
    Fixed in 1:4.1.45-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • netty
    Fixed in 1:4.1.45-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • netty-3.9
    Fixed in 3.9.0.Final-1ubuntu0.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • netty
    Fixed in 1:4.1.7-4ubuntu0.1
  • netty-3.9
    Fixed in 3.9.9.Final-1+deb9u1build0.18.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • netty
    Fixed in 1:3.2.6.Final-2+deb8u2build0.14.04.1~esm1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • netty
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.