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Debian DSA-4952-1 : tomcat9 - security update

medium Nessus Plugin ID 152418

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4952 advisory.

 - A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65. (CVE-2021-30640)

 - Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding;
 and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
 (CVE-2021-33037)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the tomcat9 packages.

For the stable distribution (buster), these problems have been fixed in version 9.0.31-1~deb10u5.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991046

https://security-tracker.debian.org/tracker/source-package/tomcat9

https://www.debian.org/security/2021/dsa-4952

https://security-tracker.debian.org/tracker/CVE-2021-30640

https://security-tracker.debian.org/tracker/CVE-2021-33037

https://packages.debian.org/source/buster/tomcat9

Plugin Details

Severity: Medium

ID: 152418

File Name: debian_DSA-4952.nasl

Version: 1.3

Type: local

Agent: unix

Published: 8/10/2021

Updated: 1/26/2022

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2021-30640

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libtomcat9-embed-java, p-cpe:/a:debian:debian_linux:libtomcat9-java, p-cpe:/a:debian:debian_linux:tomcat9, p-cpe:/a:debian:debian_linux:tomcat9-admin, p-cpe:/a:debian:debian_linux:tomcat9-common, p-cpe:/a:debian:debian_linux:tomcat9-docs, p-cpe:/a:debian:debian_linux:tomcat9-examples, p-cpe:/a:debian:debian_linux:tomcat9-user, cpe:/o:debian:debian_linux:10.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/9/2021

Vulnerability Publication Date: 5/12/2021

Reference Information

CVE: CVE-2021-30640, CVE-2021-33037

IAVA: 2021-A-0303-S