Information disclosure in Apache Tomcat
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 r…
Vulnerability class: Information Disclosure
EPSS: 0.246 (97.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Apache Tomcat — versions 9.0.0, 9.0.35-3.39.1, 9.0.35-3.57.3
- Apache Software Foundation Tomcat — versions Apache Tomcat 10 10.0.0-M1 to 10.0.0-M9, Apache Tomcat 9 9.0.0-M1 to 9.0.39, Apache Tomcat 8.5 8.5.0 to 8.5.59
- Netapp Element_plug-in
- Netapp Oncommand_system_manager
- Oracle Blockchain_platform
- Oracle Communications_cloud_native_core_binding_support_function — versions 1.10.0
- Oracle Communications_cloud_native_core_policy — versions 1.14.0
- Oracle Communications_instant_messaging_server — versions 10.0.1.5.0
- Oracle Instantis_enterprisetrack — versions 17.1, 17.2, 17.3
- Oracle Mysql_enterprise_monitor
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Mailing List, x_refsource_MISC, Vendor Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2020-17527?
- CVE-2020-17527 is a high-severity vulnerability in Apache Tomcat, classified under Information Disclosure. CVSS score: 7.5/10. Published 2020-12-03.
- How severe is CVE-2020-17527?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-17527 known to be exploited?
- 16 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.