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Vulnerability Details : CVE-2020-17527

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.
Publish Date : 2020-12-03 Last Update Date : 2021-09-14
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Obtain Information
CWE ID 200

- Products Affected By CVE-2020-17527

# Product Type Vendor Product Version Update Edition Language
1 Application Apache Tomcat * * * * Version Details Vulnerabilities
2 Application Apache Tomcat 9.0.0 Milestone23 * * Version Details Vulnerabilities
3 Application Apache Tomcat 9.0.0 Milestone18 * * Version Details Vulnerabilities
4 Application Apache Tomcat 9.0.0 Milestone6 * * Version Details Vulnerabilities
5 Application Apache Tomcat 9.0.0 Milestone13 * * Version Details Vulnerabilities
6 Application Apache Tomcat 9.0.0 Milestone24 * * Version Details Vulnerabilities
7 Application Apache Tomcat 9.0.0 Milestone19 * * Version Details Vulnerabilities
8 Application Apache Tomcat 9.0.0 Milestone7 * * Version Details Vulnerabilities
9 Application Apache Tomcat 9.0.0 Milestone14 * * Version Details Vulnerabilities
10 Application Apache Tomcat 9.0.0 Milestone25 * * Version Details Vulnerabilities
11 Application Apache Tomcat 9.0.0 Milestone20 * * Version Details Vulnerabilities
12 Application Apache Tomcat 9.0.0 Milestone8 * * Version Details Vulnerabilities
13 Application Apache Tomcat 9.0.0 Milestone15 * * Version Details Vulnerabilities
14 Application Apache Tomcat 9.0.0 Milestone10 * * Version Details Vulnerabilities
15 Application Apache Tomcat 9.0.0 Milestone26 * * Version Details Vulnerabilities
16 Application Apache Tomcat 9.0.0 Milestone21 * * Version Details Vulnerabilities
17 Application Apache Tomcat 9.0.0 Milestone9 * * Version Details Vulnerabilities
18 Application Apache Tomcat 9.0.0 Milestone16 * * Version Details Vulnerabilities
19 Application Apache Tomcat 9.0.0 Milestone11 * * Version Details Vulnerabilities
20 Application Apache Tomcat 9.0.0 Milestone27 * * Version Details Vulnerabilities
21 Application Apache Tomcat 9.0.0 Milestone22 * * Version Details Vulnerabilities
22 Application Apache Tomcat 9.0.0 Milestone17 * * Version Details Vulnerabilities
23 Application Apache Tomcat 9.0.0 Milestone5 * * Version Details Vulnerabilities
24 Application Apache Tomcat 9.0.0 Milestone12 * * Version Details Vulnerabilities
25 Application Apache Tomcat 9.0.35-3.39.1 * * * Version Details Vulnerabilities
26 Application Apache Tomcat 9.0.35-3.57.3 * * * Version Details Vulnerabilities
27 Application Apache Tomcat 9.0.36 * * * Version Details Vulnerabilities
28 Application Apache Tomcat 9.0.37 * * * Version Details Vulnerabilities
29 Application Apache Tomcat 9.0.38 * * * Version Details Vulnerabilities
30 Application Apache Tomcat 9.0.39 * * * Version Details Vulnerabilities
31 Application Apache Tomcat 10.0.0 Milestone7 * * Version Details Vulnerabilities
32 Application Apache Tomcat 10.0.0 Milestone2 * * Version Details Vulnerabilities
33 Application Apache Tomcat 10.0.0 Milestone8 * * Version Details Vulnerabilities
34 Application Apache Tomcat 10.0.0 Milestone3 * * Version Details Vulnerabilities
35 Application Apache Tomcat 10.0.0 Milestone9 * * Version Details Vulnerabilities
36 Application Apache Tomcat 10.0.0 Milestone4 * * Version Details Vulnerabilities
37 Application Apache Tomcat 10.0.0 Milestone5 * * Version Details Vulnerabilities
38 Application Apache Tomcat 10.0.0 Milestone6 * * Version Details Vulnerabilities
39 Application Apache Tomcat 10.0.0 Milestone1 * * Version Details Vulnerabilities
40 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
41 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
42 Application Netapp Element Plug-in - * * * Version Details Vulnerabilities
43 Application Netapp Oncommand System Manager * * * * Version Details Vulnerabilities
44 Application Oracle Instantis Enterprisetrack 17.1 * * * Version Details Vulnerabilities
45 Application Oracle Instantis Enterprisetrack 17.2 * * * Version Details Vulnerabilities
46 Application Oracle Instantis Enterprisetrack 17.3 * * * Version Details Vulnerabilities
47 Application Oracle Mysql Enterprise Monitor * * * * Version Details Vulnerabilities
48 Application Oracle Sd-wan Edge 9.0 * * * Version Details Vulnerabilities
49 Application Oracle Workload Manager 18C * * * Version Details Vulnerabilities
50 Application Oracle Workload Manager 19C * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apache Tomcat 39
Debian Debian Linux 2
Netapp Element Plug-in 1
Netapp Oncommand System Manager 1
Oracle Instantis Enterprisetrack 3
Oracle Mysql Enterprise Monitor 1
Oracle Sd-wan Edge 1
Oracle Workload Manager 2

- References For CVE-2020-17527

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E
MLIST [tomcat-dev] 20201203 svn commit: r1884073 - in /tomcat/site/trunk: docs/security-10.html docs/security-8.html docs/security-9.html xdocs/security-10.xml xdocs/security-8.xml xdocs/security-9.xml
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.oracle.com//security-alerts/cpujul2021.html
N/A N/A
https://www.debian.org/security/2021/dsa-4835
DEBIAN DSA-4835
https://lists.apache.org/thread.html/[email protected]%3Ccommits.tomee.apache.org%3E
MLIST [tomee-commits] 20210319 [jira] [Updated] (TOMEE-2936) TomEE plus(7.0.9) is affected by CVE-2020-17527(BDSA-2020-3628) vulnerability.
https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E
MLIST [tomcat-dev] 20210119 Re: [SECURITY][CORRECTION] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up
https://lists.apache.org/thread.html/[email protected]%3Cannounce.apache.org%3E
MLIST [announce] 20210119 Re: [SECURITY][CORRECTION] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up
https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E
MLIST [tomcat-users] 20210119 Re: [SECURITY][CORRECTION] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up
https://lists.apache.org/thread.html/[email protected]%3Cannounce.tomcat.apache.org%3E
MLIST [tomcat-announce] 20210119 Re: [SECURITY][CORRECTION] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up
https://security.gentoo.org/glsa/202012-23
GENTOO GLSA-202012-23
https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E
MLIST [tomcat-dev] 20210114 svn commit: r1885488 - in /tomcat/site/trunk: docs/security-10.html docs/security-7.html docs/security-8.html docs/security-9.html xdocs/security-10.xml xdocs/security-7.xml xdocs/security-8.xml xdocs/security-9.xml
https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E
MLIST [tomcat-dev] 20201203 [SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up
http://www.openwall.com/lists/oss-security/2020/12/03/3
MLIST [oss-security] 20201203 [SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up
https://lists.apache.org/thread.html/[email protected]%3Cissues.guacamole.apache.org%3E
MLIST [guacamole-issues] 20201206 [jira] [Created] (GUACAMOLE-1229) Fix in Dockerhub for latest CVE-2020-17527
https://lists.apache.org/thread.html/rce5ac9a40173651d540babce59f6f3825f12c6d4e886ba00823b11e5%40%3Cannounce.tomcat.apache.org%3E
https://security.netapp.com/advisory/ntap-20201210-0003/ CONFIRM
https://lists.debian.org/debian-lts-announce/2020/12/msg00022.html
MLIST [debian-lts-announce] 20201216 [SECURITY] [DLA 2495-1] tomcat8 security update
https://lists.apache.org/thread.html/[email protected]%3Ccommits.tomee.apache.org%3E
MLIST [tomee-commits] 20201207 [jira] [Assigned] (TOMEE-2936) TomEE plus(7.0.9) is affected by CVE-2020-17527(BDSA-2020-3628) vulnerability.
https://lists.apache.org/thread.html/[email protected]%3Ccommits.tomee.apache.org%3E
MLIST [tomee-commits] 20201207 [jira] [Created] (TOMEE-2936) TomEE plus(7.0.9) is affected by CVE-2020-17527(BDSA-2020-3628) vulnerability.
https://lists.apache.org/thread.html/[email protected]%3Cissues.guacamole.apache.org%3E
MLIST [guacamole-issues] 20201206 [jira] [Commented] (GUACAMOLE-1229) Fix in Dockerhub for latest CVE-2020-17527
https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E
MLIST [tomcat-users] 20201203 [SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up
https://lists.apache.org/thread.html/[email protected]%3Cannounce.apache.org%3E
MLIST [announce] 20201203 [SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up
https://lists.apache.org/thread.html/[email protected]%3Cannounce.tomcat.apache.org%3E
MLIST [tomcat-announce] 20201203 [SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up

- Metasploit Modules Related To CVE-2020-17527

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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