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Ubuntu 20.04 LTS : Tomcat vulnerabilities (USN-4596-1)

high Nessus Plugin ID 141862

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4596-1 advisory.

 It was discovered that Tomcat did not properly manage HTTP/2 streams. An

 attacker could possibly use this to cause Tomcat to consume resources,

 resulting in a denial of service. (CVE-2020-11996)

 It was discovered that Tomcat did not properly release the HTTP/1.1

 processor after the upgrade to HTTP/2. An attacker could possibly use this to generate an OutOfMemoryException, resulting in a denial of service.

 (CVE-2020-13934)

 It was discovered that Tomcat did not properly validate the payload length in a WebSocket frame. An attacker could possibly use this to trigger an infinite loop, resulting in a denial of service.
 (CVE-2020-13935)

 It was discovered that Tomcat did not properly deserialize untrusted data. An attacker could possibly use this issue to execute arbitrary code. (CVE-2020-9484)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-4596-1

Plugin Details

Severity: High

ID: 141862

File Name: ubuntu_USN-4596-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 10/24/2020

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-9484

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:tomcat9-user, p-cpe:/a:canonical:ubuntu_linux:tomcat9-admin, p-cpe:/a:canonical:ubuntu_linux:tomcat9-examples, p-cpe:/a:canonical:ubuntu_linux:tomcat9, p-cpe:/a:canonical:ubuntu_linux:tomcat9-common, p-cpe:/a:canonical:ubuntu_linux:libtomcat9-java, p-cpe:/a:canonical:ubuntu_linux:libtomcat9-embed-java

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/21/2020

Vulnerability Publication Date: 5/20/2020

Reference Information

CVE: CVE-2020-11996, CVE-2020-13934, CVE-2020-13935, CVE-2020-9484

USN: 4596-1