Detections
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Amazon Linux AMI : tomcat7 (ALAS-2021-1493)

high Nessus Plugin ID 148378

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

The version of tomcat7 installed on the remote host is prior to 7.0.108-1.40. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2021-1493 advisory.

 A deserialization flaw was discovered in Apache Tomcat's use of a FileStore. Under specific circumstances, an attacker can use a specially crafted request to trigger Remote Code Execution through deserialization of the file under their control. The highest threat from the vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-9484)

 The fix forCVE-2020-9484was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable toCVE-2020-9494. Note that both the previously published prerequisites forCVE-2020-9484and the previously published mitigations forCVE-2020-9484also apply to this issue. (CVE-2021-25329)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update tomcat7' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2021-1493.html

https://access.redhat.com/security/cve/CVE-2020-9484

https://access.redhat.com/security/cve/CVE-2021-25329

Plugin Details

Severity: High

ID: 148378

File Name: ala_ALAS-2021-1493.nasl

Version: 1.6

Type: local

Agent: unix

Published: 4/7/2021

Updated: 12/17/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, 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-2021-25329

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: p-cpe:/a:amazon:linux:tomcat7-admin-webapps, p-cpe:/a:amazon:linux:tomcat7-javadoc, p-cpe:/a:amazon:linux:tomcat7-docs-webapp, p-cpe:/a:amazon:linux:tomcat7-jsp-2.2-api, p-cpe:/a:amazon:linux:tomcat7-servlet-3.0-api, p-cpe:/a:amazon:linux:tomcat7, p-cpe:/a:amazon:linux:tomcat7-log4j, p-cpe:/a:amazon:linux:tomcat7-lib, p-cpe:/a:amazon:linux:tomcat7-webapps, p-cpe:/a:amazon:linux:tomcat7-el-2.2-api, cpe:/o:amazon:linux

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/7/2021

Vulnerability Publication Date: 5/11/2020

Reference Information

CVE: CVE-2020-9484, CVE-2021-25329

ALAS: 2021-1493