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Debian DLA-2109-1 : netty security update

critical Nessus Plugin ID 133813

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Synopsis

The remote Debian host is missing a security update.

Description

Several vulnerabilities were discovered in the HTTP server provided by Netty, a Java NIO client/server socket framework :

CVE-2019-20444

HttpObjectDecoder.java allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an 'invalid fold.'

CVE-2019-20445

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

CVE-2020-7238

Netty allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header.

For Debian 8 'Jessie', these problems have been fixed in version 1:3.2.6.Final-2+deb8u2.

We recommend that you upgrade your netty packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected libnetty-java package.

See Also

https://lists.debian.org/debian-lts-announce/2020/02/msg00017.html

https://packages.debian.org/source/jessie/netty

Plugin Details

Severity: Critical

ID: 133813

File Name: debian_DLA-2109.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2/20/2020

Updated: 3/27/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2019-20445

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:8.0, p-cpe:/a:debian:debian_linux:libnetty-java

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/19/2020

Vulnerability Publication Date: 1/27/2020

Reference Information

CVE: CVE-2019-20444, CVE-2019-20445, CVE-2020-7238