IBM7C0C1B9C91F187A3B3103241169E1CDEC8BDE27A306F7430D8C3F1F7EA2D70E4Security Bulletin: CVE-2021-42340 Apache Tomcat is vulnerable to a denial of service, caused by a memory leak flaw in WebSocket connections.
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.02 Low
EPSS
Percentile
87.7%
Summary
Apache Tomcat is vulnerable to a denial of service, caused by a memory leak flaw in WebSocket connections. By sending a specially-crafted request using OutOfMemoryError, a remote attacker could exploit this vulnerability to cause a denial of service condition.
Vulnerability Details
CVEID:CVE-2021-42340
**DESCRIPTION:**Apache Tomcat is vulnerable to a denial of service, caused by a memory leak flaw in WebSocket connections. By sending a specially-crafted request using OutOfMemoryError, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/211354 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
|---|---|
| UCD - IBM UrbanCode Deploy | 6.2.7.3 |
| UCD - IBM UrbanCode Deploy | 6.2.7.4 |
| UCD - IBM UrbanCode Deploy | 6.2.7.5 |
| UCD - IBM UrbanCode Deploy | 6.2.7.6 |
| UCD - IBM UrbanCode Deploy | 6.2.7.7 |
| UCD - IBM UrbanCode Deploy | 6.2.7.8 |
| UCD - IBM UrbanCode Deploy | 6.2.7.9 |
| UCD - IBM UrbanCode Deploy | 6.2.7.10 |
| UCD - IBM UrbanCode Deploy | 6.2.7.11 |
| UCD - IBM UrbanCode Deploy | 6.2.7.12 |
| UCD - IBM UrbanCode Deploy | 7.0.3.0 |
| UCD - IBM UrbanCode Deploy | 7.0.3.1 |
| UCD - IBM UrbanCode Deploy | 7.0.3.2 |
| UCD - IBM UrbanCode Deploy | 7.0.3.3 |
| UCD - IBM UrbanCode Deploy | 7.0.4.0 |
| UCD - IBM UrbanCode Deploy | 7.0.4.1 |
| UCD - IBM UrbanCode Deploy | 7.0.4.2 |
| UCD - IBM UrbanCode Deploy | 7.0.5.0 |
| UCD - IBM UrbanCode Deploy | 7.0.5.1 |
| UCD - IBM UrbanCode Deploy | 7.0.5.2 |
| UCD - IBM UrbanCode Deploy | 7.0.5.3 |
| UCD - IBM UrbanCode Deploy | 7.0.5.4 |
| UCD - IBM UrbanCode Deploy | 7.0.5.5 |
| UCD - IBM UrbanCode Deploy | 7.0.5.6 |
| UCD - IBM UrbanCode Deploy | 7.0.5.7 |
| UCD - IBM UrbanCode Deploy | 7.1.0.0 |
| UCD - IBM UrbanCode Deploy | 7.1.0.1 |
| UCD - IBM UrbanCode Deploy | 7.1.0.2 |
| UCD - IBM UrbanCode Deploy | 7.1.1.0 |
| UCD - IBM UrbanCode Deploy | 7.1.1.1 |
| UCD - IBM UrbanCode Deploy | 7.1.1.2 |
| UCD - IBM UrbanCode Deploy | 7.1.2.1 |
| UCD - IBM UrbanCode Deploy | 7.1.2.2 |
| UCD - IBM UrbanCode Deploy | 7.1.2.3 |
| UCD - IBM UrbanCode Deploy | 7.2.0.0 |
| UCD - IBM UrbanCode Deploy | 7.2.0.1 |
| UCD - IBM UrbanCode Deploy | 7.2.0.2 |
| UCD - IBM UrbanCode Deploy | 7.2.1.0 |
| UCD - IBM UrbanCode Deploy | 7.2.1.1 |
Remediation/Fixes
Upgrade to any of 6.2.7.13, 7.0.5.8, 7.1.2.4, 7.2.0.3 , 7.2.1.2
Workarounds and Mitigations
None
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.02 Low
EPSS
Percentile
87.7%