Lucene search

K
amazonAmazonALAS-2021-1473
HistoryJan 12, 2021 - 10:52 p.m.

Medium: tomcat8

2021-01-1222:52:00
alas.aws.amazon.com
12

5 Medium

CVSS2

Attack Vector

NETWORK

Attack 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

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

0.003 Low

EPSS

Percentile

69.6%

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  

Additional References

Red Hat: CVE-2020-17527

Mitre: CVE-2020-17527

5 Medium

CVSS2

Attack Vector

NETWORK

Attack 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

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

0.003 Low

EPSS

Percentile

69.6%