CVE-2020-17527

high

Description

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.

References

https://lists.apache.org/thread.html/rce5ac9a40173651d540babce59f6f3825f12c6d4e886ba00823b11e5%40%3Cannounce.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cannounce.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cannounce.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E

http://www.openwall.com/lists/oss-security/2020/12/03/3

https://lists.apache.org/thread.html/[email protected]%3Cissues.guacamole.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cissues.guacamole.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Ccommits.tomee.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Ccommits.tomee.apache.org%3E

https://security.netapp.com/advisory/ntap-20201210-0003/

https://lists.debian.org/debian-lts-announce/2020/12/msg00022.html

https://security.gentoo.org/glsa/202012-23

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cannounce.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cannounce.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E

https://www.debian.org/security/2021/dsa-4835

https://lists.apache.org/thread.html/[email protected]%3Ccommits.tomee.apache.org%3E

https://www.oracle.com/security-alerts/cpuApr2021.html

https://www.oracle.com//security-alerts/cpujul2021.html

https://www.oracle.com/security-alerts/cpujan2022.html

https://www.oracle.com/security-alerts/cpuapr2022.html

Details

Source: MITRE

Published: 2020-12-03

Updated: 2022-05-12

Type: CWE-200

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH