7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
8 High
AI Score
Confidence
High
5.1 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
0.154 Low
EPSS
Percentile
95.8%
Issue Overview:
A privilege escalation flaw was found in Tomcat when the JMX Remote Lifecycle Listener was enabled. A local attacker without access to the Tomcat process or configuration files could be able to manipulate the RMI registry to perform a man-in-the-middle attack. The attacker could then capture user names and passwords used to access the JMX interface and gain complete control over the Tomcat instance. (CVE-2019-12418)
When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack. The window was considered too narrow for an exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability. (CVE-2019-17563)
A flaw was found in Apache Tomcat, where the payload length in a WebSocket frame was not correctly validated. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service. The highest threat from this vulnerability is to system availability. (CVE-2020-13935)
Affected Packages:
tomcat
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update tomcat to update your system.
New Packages:
noarch:
tomcat-7.0.76-10.amzn2.0.4.noarch
tomcat-admin-webapps-7.0.76-10.amzn2.0.4.noarch
tomcat-docs-webapp-7.0.76-10.amzn2.0.4.noarch
tomcat-javadoc-7.0.76-10.amzn2.0.4.noarch
tomcat-jsvc-7.0.76-10.amzn2.0.4.noarch
tomcat-jsp-2.2-api-7.0.76-10.amzn2.0.4.noarch
tomcat-lib-7.0.76-10.amzn2.0.4.noarch
tomcat-servlet-3.0-api-7.0.76-10.amzn2.0.4.noarch
tomcat-el-2.2-api-7.0.76-10.amzn2.0.4.noarch
tomcat-webapps-7.0.76-10.amzn2.0.4.noarch
src:
tomcat-7.0.76-10.amzn2.0.4.src
Red Hat: CVE-2019-12418, CVE-2019-17563, CVE-2020-13935
Mitre: CVE-2019-12418, CVE-2019-17563, CVE-2020-13935
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
8 High
AI Score
Confidence
High
5.1 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
0.154 Low
EPSS
Percentile
95.8%