Vulnerability in Apache Tomcat
CVE-2021-30640
A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 t…
EPSS: 0.099 (95.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N.
Affected products
- Apache Tomcat
- Apache Software Foundation Tomcat — versions Apache Tomcat 10 10.0.0-M1 to 10.0.5, Apache Tomcat 9 9.0.0.M1 to 9.0.45, Apache Tomcat 8.5 8.5.0 to 8.5.65
- Oracle Communications_cloud_native_core_policy — versions 1.14.0
- Oracle Communications_diameter_signaling_router
- Oracle Communications_pricing_design_center — versions 12.0.0.3.0
- Oracle Hospitality_cruise_shipboard_property_management_system — versions 20.1.0
- Oracle Tekelec_platform_distribution
- Debian Debian_linux — versions 9.0, 10.0, 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Mailing List, x_refsource_MISC, Vendor Advisory)
- security@apache.org (Third Party Advisory, x_refsource_MISC)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- 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 (Patch, Third Party Advisory, x_refsource_MISC)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2021-30640?
- CVE-2021-30640 is a medium-severity vulnerability in Apache Tomcat, classified under Improper Encoding or Escaping of Output. CVSS score: 6.5/10. Published 2021-07-12.
- How severe is CVE-2021-30640?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-30640 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.