Vulnerability DatabaseCVE-2021-42340
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CVE-2021-42340
October 14, 2021
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 released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.
Related Resources (21)
https://nvd.nist.gov/vuln/detail/CVE-2021-42340
https://www.oracle.com/security-alerts/cpuapr2022.html
https://security.gentoo.org/glsa/202208-34
https://github.com/apache/tomcat/commit/31d62426645824bdfe076a0c0eafa904d90b4fb9
https://github.com/apache/tomcat
https://github.com/apache/tomcat/commit/d27535bdee95d252418201eb21e9d29476aa6b6a
https://www.oracle.com/security-alerts/cpujul2022.html
https://tomcat.apache.org/security-8.html
https://tomcat.apache.org/security-9.html
https://security.netapp.com/advisory/ntap-20211104-0001
https://github.com/apache/tomcat/commit/80f1438ec45e77a07b96419808971838d259eb47
https://github.com/apache/tomcat/commit/d5a6660cba7f51589468937bf3bbad4db7810371
https://tomcat.apache.org/security-10.html
https://access.redhat.com/security/cve/CVE-2021-42340
https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784%40%3Ccommits.myfaces.apache.org%3E
https://www.debian.org/security/2021/dsa-5009
https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E
https://www.oracle.com/security-alerts/cpujan2022.html
https://kc.mcafee.com/corporate/index?page=content&id=SB10379
https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784@%3Ccommits.myfaces.apache.org%3E
https://security.netapp.com/advisory/ntap-20211104-0001/
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
CVSS v2
Base Score:
5
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Weakness Type (CWE)
Missing Release of Resource after Effective Lifetime
CWE-772
EPSS
Base Score:
5.70