Vulnerability in Apache Tomcat
CVE-2021-42340
The fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5, 10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not rele…
EPSS: 0.110 (95.3th 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:N/I:N/A:H.
Affected products
- Apache Tomcat — versions 10.0.0, 10.1.0
- Apache Software Foundation Tomcat — versions Apache Tomcat 10 10.0.0-M10 to 10.0.11, Apache Tomcat 10 10.1.0-M1 to 10.1.0-M5, Apache Tomcat 9 9.0.40 to 9.0.53
- Netapp Hci
- Netapp Management_services_for_element_software
- Oracle Agile_engineering_data_management — versions 6.2.1.0
- Oracle Big_data_spatial_and_graph
- Oracle Communications_diameter_signaling_router
- Oracle Hospitality_cruise_shipboard_property_management_system — versions 20.1.0
- Oracle Managed_file_transfer — versions 12.2.1.3.0, 12.2.1.4.0
- Oracle Middleware_common_libraries_and_tools — versions 12.2.1.4.0
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 (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@apache.org (Patch, Third Party Advisory, x_refsource_MISC)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (Patch, Third Party Advisory, x_refsource_MISC)
- security@apache.org (Patch, Third Party Advisory, x_refsource_MISC)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2021-42340?
- CVE-2021-42340 is a high-severity vulnerability in Apache Tomcat, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2021-10-14.
- How severe is CVE-2021-42340?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-42340 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.