7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.003 Low
EPSS
Percentile
69.1%
Issue Overview:
While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests. (CVE-2020-17527)
Affected Packages:
tomcat8
Issue Correction:
Run yum update tomcat8 to update your system.
New Packages:
noarch:
tomcat8-admin-webapps-8.5.60-1.86.amzn1.noarch
tomcat8-lib-8.5.60-1.86.amzn1.noarch
tomcat8-log4j-8.5.60-1.86.amzn1.noarch
tomcat8-jsp-2.3-api-8.5.60-1.86.amzn1.noarch
tomcat8-javadoc-8.5.60-1.86.amzn1.noarch
tomcat8-webapps-8.5.60-1.86.amzn1.noarch
tomcat8-el-3.0-api-8.5.60-1.86.amzn1.noarch
tomcat8-servlet-3.1-api-8.5.60-1.86.amzn1.noarch
tomcat8-docs-webapp-8.5.60-1.86.amzn1.noarch
tomcat8-8.5.60-1.86.amzn1.noarch
src:
tomcat8-8.5.60-1.86.amzn1.src
Red Hat: CVE-2020-17527
Mitre: CVE-2020-17527
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.003 Low
EPSS
Percentile
69.1%