7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.727 High
EPSS
Percentile
98.0%
Issue Overview:
The HTTP/2 implementation in Apache Tomcat accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API’s blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS. (CVE-2019-0199)
The SSI printenv command in Apache Tomcat echoes user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for debugging and is unlikely to be present in a production website. (CVE-2019-0221)
Affected Packages:
tomcat8
Issue Correction:
Run yum update tomcat8 to update your system.
New Packages:
noarch:
tomcat8-servlet-3.1-api-8.5.42-1.80.amzn1.noarch
tomcat8-lib-8.5.42-1.80.amzn1.noarch
tomcat8-jsp-2.3-api-8.5.42-1.80.amzn1.noarch
tomcat8-docs-webapp-8.5.42-1.80.amzn1.noarch
tomcat8-el-3.0-api-8.5.42-1.80.amzn1.noarch
tomcat8-javadoc-8.5.42-1.80.amzn1.noarch
tomcat8-admin-webapps-8.5.42-1.80.amzn1.noarch
tomcat8-8.5.42-1.80.amzn1.noarch
tomcat8-webapps-8.5.42-1.80.amzn1.noarch
tomcat8-log4j-8.5.42-1.80.amzn1.noarch
src:
tomcat8-8.5.42-1.80.amzn1.src
Red Hat: CVE-2019-0199, CVE-2019-0221
Mitre: CVE-2019-0199, CVE-2019-0221
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.727 High
EPSS
Percentile
98.0%