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.
Vulnerability category: Information leak
Products affected by CVE-2020-17527
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone1:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone2:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone3:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone4:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone5:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone6:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone7:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone8:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone9:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.36:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.37:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.35-3.39.1:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.35-3.57.3:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.38:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.39:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:workload_manager:18c:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:workload_manager:19c:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:sd-wan_edge:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.10.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:*
- Netapp » Oncommand System ManagerVersions from including (>=) 3.0.0 and up to, including, (<=) 3.1.3cpe:2.3:a:netapp:oncommand_system_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:element_plug-in:-:*:*:*:*:vcenter_server:*:*
Threat overview for CVE-2020-17527
Top countries where our scanners detected CVE-2020-17527
Top open port discovered on systems with this issue
80
IPs affected by CVE-2020-17527 307,302
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2020-17527!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
from SecurityScorecard.
Exploit prediction scoring system (EPSS) score for CVE-2020-17527
0.27%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 68 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-17527
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-17527
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by:
- nvd@nist.gov (Primary)
- security@apache.org (Secondary)
References for CVE-2020-17527
-
https://security.gentoo.org/glsa/202012-23
Apache Tomcat: Information disclosure (GLSA 202012-23) — Gentoo securityThird Party Advisory
-
https://lists.apache.org/thread.html/rd5babd13d7a350b369b2f647b4dd32ce678af42f9aba5389df1ae6ca@%3Cusers.tomcat.apache.org%3E
Pony Mail!Mailing List;Vendor Advisory
-
https://www.oracle.com/security-alerts/cpuapr2022.html
Oracle Critical Patch Update Advisory - April 2022Patch;Third Party Advisory
-
https://lists.apache.org/thread.html/rce5ac9a40173651d540babce59f6f3825f12c6d4e886ba00823b11e5%40%3Cannounce.tomcat.apache.org%3E
[SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up - Pony MailMailing List;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2020/12/03/3
oss-security - [SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-upMailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/ra9fcdb904dd2e2256ef90b3e4ced279cd464cb0ab63a6c64df5c010d@%3Cannounce.tomcat.apache.org%3E
Re: [SECURITY][CORRECTION] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up - Pony MailMailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/ra35c8d617b17d59f400112cebadec43ad379f98198b4a9726190d7ee@%3Cissues.guacamole.apache.org%3E
Mailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/rabbe6b3ae6a9795641d7a05c00d2378d5bbbe4240b7e20f09b092cce@%3Cissues.guacamole.apache.org%3E
Mailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/r9fd47f1b03e9b41d16a5cf72659b533887267d3398d963c2fff3abfa@%3Ccommits.tomee.apache.org%3E
Mailing List;Vendor Advisory
-
https://www.oracle.com//security-alerts/cpujul2021.html
Oracle Critical Patch Update Advisory - July 2021Patch;Third Party Advisory
-
https://www.oracle.com/security-alerts/cpujan2022.html
Oracle Critical Patch Update Advisory - January 2022Patch;Third Party Advisory
-
https://lists.apache.org/thread.html/rce5ac9a40173651d540babce59f6f3825f12c6d4e886ba00823b11e5@%3Cannounce.apache.org%3E
[SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up - Pony MailMailing List;Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20201210-0003/
CVE-2020-17527 Apache Tomcat Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://lists.apache.org/thread.html/rbba08c4dcef3603e36276d49adda8eedbe458c5104314b4038f697e1@%3Cusers.tomcat.apache.org%3E
Re: [SECURITY][CORRECTION] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up - Pony MailMailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/r26a2a66339087fc37db3caf201e446d3e83b5cce314371e235ff1784@%3Ccommits.tomee.apache.org%3E
Mailing List;Vendor Advisory
-
https://www.oracle.com/security-alerts/cpuApr2021.html
Oracle Critical Patch Update Advisory - April 2021Patch;Third Party Advisory
-
https://www.debian.org/security/2021/dsa-4835
Debian -- Security Information -- DSA-4835-1 tomcat9Third Party Advisory
-
https://lists.apache.org/thread.html/r8a227ac6a755a6406c1cc47dd48800e973d4cf13fe7fe68ac59c679c@%3Cdev.tomcat.apache.org%3E
[SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up - Pony MailMailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/ra9fcdb904dd2e2256ef90b3e4ced279cd464cb0ab63a6c64df5c010d@%3Cannounce.apache.org%3E
Pony Mail!Mailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/r2d6e05c5ff96f8068a59dfdb3800e9ee8d4e36ce1971783c6e5f9b20@%3Ccommits.tomee.apache.org%3E
[jira] [Updated] (TOMEE-2936) TomEE plus(7.0.9) is affected by CVE-2020-17527(BDSA-2020-3628) vulnerability. - Pony MailMailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/rce5ac9a40173651d540babce59f6f3825f12c6d4e886ba00823b11e5@%3Cannounce.tomcat.apache.org%3E
[SECURITY] CVE-2020-17527 Apache Tomcat HTTP/2 Request header mix-up - Pony MailMailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/r5a285242737ddef4d338236328aaaf3237183e1465a5efafd16b99ed@%3Cdev.tomcat.apache.org%3E
Pony Mail!Mailing List;Vendor Advisory
-
https://lists.debian.org/debian-lts-announce/2020/12/msg00022.html
[SECURITY] [DLA 2495-1] tomcat8 security updateMailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/rca833c6d42b7b9ce1563488c0929f29fcc95947d86e5e740258c8937@%3Cdev.tomcat.apache.org%3E
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 xdocsMailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/raa0e9ad388c1e6fd1e301b5e080f9439f64cb4178119a86a4801cc53@%3Cdev.tomcat.apache.org%3E
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 - Pony MailMailing List;Vendor Advisory
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