Auth weakness in JNDIRealm

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Summary

CVECVE-2021-30640
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-07-12 15:15:08 UTC
Updated2026-10-08 21:17:35 UTC
DescriptionA 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 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

Problem Types: CWE-116 | Authentication weaknees

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.5MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
2.0[email protected]Primary5.8AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:N/AC:M/Au:N/C:P/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Tomcat All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Tomcat affected Apache Tomcat 10 10.0.0-M1 to 10.0.5 Not specified
CNA Apache Software Foundation Apache Tomcat affected Apache Tomcat 9 9.0.0.M1 to 9.0.45 Not specified
CNA Apache Software Foundation Apache Tomcat affected Apache Tomcat 8.5 8.5.0 to 8.5.65 Not specified
CNA Apache Software Foundation Apache Tomcat affected Apache Tomcat 7 7.0.0 to 7.0.108 Not specified

References

ReferenceSourceLinkTags
Oracle Critical Patch Update Advisory - October 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Oracle Critical Patch Update Advisory - July 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
[SECURITY] [DLA 2733-1] tomcat8 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
July 2021 Apache Tomcat Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
Oracle Critical Patch Update Advisory - January 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org Mailing List, Vendor Advisory
Debian -- Security Information -- DSA-4986-1 tomcat9 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
Apache Tomcat: Multiple Vulnerabilities (GLSA 202208-34) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Debian -- Security Information -- DSA-4952-1 tomcat9 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 150366 Apache Tomcat Authentication Vulnerability (CVE-2021-30640)
  • 178743 Debian Security Update for tomcat8 (DLA 2733-1)
  • 178746 Debian Security Update for tomcat9 (DSA 4952-1)
  • 179833 Debian Security Update for tomcat9 (CVE-2021-30640)
  • 198724 Ubuntu Security Notification for Tomcat Vulnerabilities (USN-5360-1)
  • 239916 Red Hat Update for red hat jboss web server 5.6.0 (RHSA-2021:4861)
  • 296065 Oracle Solaris 11.4 Support Repository Update (SRU) 39.107.1 Missing (CPUOCT2021)
  • 352801 Amazon Linux Security Advisory for tomcat7: ALAS-2021-1534
  • 356267 Amazon Linux Security Advisory for tomcat : ALASTOMCAT8.5-2023-007
  • 670731 EulerOS Security Update for tomcat (EulerOS-SA-2021-2489)
  • 670762 EulerOS Security Update for tomcat (EulerOS-SA-2021-2520)
  • 670984 EulerOS Security Update for tomcat (EulerOS-SA-2021-2619)
  • 690074 Free Berkeley Software Distribution (FreeBSD) Security Update for tomcat (8b571fb2-f311-11eb-b12b-fc4dd43e2b6a)
  • 710609 Gentoo Linux Apache Tomcat Multiple Vulnerabilities (GLSA 202208-34)
  • 730146 Apache Tomcat Authentication Vulnerability (CVE-2021-30640)
  • 730206 McAfee Web Gateway Multiple Vulnerabilities (WP-3792, WP-4003, WP-4021, WP-4058, WP-4067)
  • 751320 SUSE Enterprise Linux Security Update for tomcat (SUSE-SU-2021:3602-1)
  • 751355 OpenSUSE Security Update for tomcat (openSUSE-SU-2021:3672-1)
  • 751364 SUSE Enterprise Linux Security Update for tomcat (SUSE-SU-2021:3669-1)
  • 751365 SUSE Enterprise Linux Security Update for tomcat (SUSE-SU-2021:3670-1)
  • 751370 OpenSUSE Security Update for tomcat (openSUSE-SU-2021:1490-1)
  • 980361 Java (maven) Security Update for org.apache.tomcat:tomcat (GHSA-36qh-35cm-5w2w)

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