Amazon Linux AMI update for tomcat8

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU25000

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-12418

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the local user without access to the Tomcat process or configuration files is able to manipulate the RMI registry to perform a man-in-the-middle attack to capture user names and passwords used to access the JMX interface.

Successful vulnerability exploitation requires that Apache Tomcat is configured with the JMX Remote Lifecycle Listener.

Mitigation

Update the affected packages:

noarch:
    tomcat8-docs-webapp-8.5.50-1.82.amzn1.noarch
    tomcat8-lib-8.5.50-1.82.amzn1.noarch
    tomcat8-log4j-8.5.50-1.82.amzn1.noarch
    tomcat8-admin-webapps-8.5.50-1.82.amzn1.noarch
    tomcat8-javadoc-8.5.50-1.82.amzn1.noarch
    tomcat8-el-3.0-api-8.5.50-1.82.amzn1.noarch
    tomcat8-webapps-8.5.50-1.82.amzn1.noarch
    tomcat8-jsp-2.3-api-8.5.50-1.82.amzn1.noarch
    tomcat8-servlet-3.1-api-8.5.50-1.82.amzn1.noarch
    tomcat8-8.5.50-1.82.amzn1.noarch

src:
    tomcat8-8.5.50-1.82.amzn1.src

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1337.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Session Fixation

EUVDB-ID: #VU25002

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-17563

CWE-ID: CWE-384 - Session Fixation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a session fixation attack.

The vulnerability exists due to a race condition when FORM authentication is used in Apache Tomcat. A remote attacker can use a narrow window to perform a session fixation attack.

Mitigation

Update the affected packages:

noarch:
    tomcat8-docs-webapp-8.5.50-1.82.amzn1.noarch
    tomcat8-lib-8.5.50-1.82.amzn1.noarch
    tomcat8-log4j-8.5.50-1.82.amzn1.noarch
    tomcat8-admin-webapps-8.5.50-1.82.amzn1.noarch
    tomcat8-javadoc-8.5.50-1.82.amzn1.noarch
    tomcat8-el-3.0-api-8.5.50-1.82.amzn1.noarch
    tomcat8-webapps-8.5.50-1.82.amzn1.noarch
    tomcat8-jsp-2.3-api-8.5.50-1.82.amzn1.noarch
    tomcat8-servlet-3.1-api-8.5.50-1.82.amzn1.noarch
    tomcat8-8.5.50-1.82.amzn1.noarch

src:
    tomcat8-8.5.50-1.82.amzn1.src

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1337.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.