7.5
HIGH
CVE-2021-42340
Apache Tomcat WebSockets Memory Leak
Description

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.

INFO

Published Date :

Oct. 14, 2021, 8:15 p.m.

Last Modified :

Nov. 7, 2023, 3:39 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-42340 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-42340 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Oracle agile_engineering_data_management
2 Oracle hospitality_cruise_shipboard_property_management_system
3 Oracle communications_diameter_signaling_router
4 Oracle sd-wan_edge
5 Oracle big_data_spatial_and_graph
6 Oracle managed_file_transfer
7 Oracle retail_customer_insights
8 Oracle retail_eftlink
9 Oracle retail_financial_integration
10 Oracle retail_data_extractor_for_merchandising
11 Oracle retail_store_inventory_management
12 Oracle middleware_common_libraries_and_tools
13 Oracle payment_interface
14 Oracle taleo_platform
1 Netapp hci
2 Netapp management_services_for_element_software
1 Debian debian_linux
1 Apache tomcat
: Total Affected Vendor : 4 | Products : 18
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-42340.

URL Resource
https://kc.mcafee.com/corporate/index?page=content&id=SB10379 Third Party Advisory
https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784%40%3Ccommits.myfaces.apache.org%3E
https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E Mailing List Vendor Advisory
https://security.gentoo.org/glsa/202208-34 Third Party Advisory
https://security.netapp.com/advisory/ntap-20211104-0001/ Third Party Advisory
https://www.debian.org/security/2021/dsa-5009 Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
PalindromeLabs/awesome-websocket-security

Awesome information for WebSockets security research

security websocket websockets security-tools websocket-security websockets-security web-application-security

Updated: 1 month ago
244 stars 25 fork 25 watcher
Born at : Nov. 10, 2021, 11:51 p.m. This repo has been linked 17 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-42340 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-42340 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784%40%3Ccommits.myfaces.apache.org%3E [No types assigned]
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784@%3Ccommits.myfaces.apache.org%3E
  • Modified Analysis by [email protected]

    Oct. 27, 2022

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/202208-34 No Types Assigned https://security.gentoo.org/glsa/202208-34 Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html Vendor Advisory https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpujul2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:* versions from (including) 8.0.0.0 up to (including) 8.5.0.2 *cpe:2.3:a:oracle:hospitality_cruise_shipboard_property_management_system:20.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:middleware_common_libraries_and_tools:12.2.1.4.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:payment_interface:19.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:payment_interface:20.3:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_customer_insights:15.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_customer_insights:16.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_data_extractor_for_merchandising:15.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_data_extractor_for_merchandising:16.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_eftlink:21.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_financial_integration:16.0.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_financial_integration:19.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.0.4.13:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.1.3.5:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.1.3.14:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:15.0.3.3:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:15.0.3.8:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:16.0.3.7:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:taleo_platform:*:*:*:*:*:*:*:* OR *cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:big_data_spatial_and_graph:*:*:*:*:*:*:*:* versions up to (excluding) 23.1 *cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:* versions from (including) 8.0.0.0 up to (including) 8.5.0.2 *cpe:2.3:a:oracle:hospitality_cruise_shipboard_property_management_system:20.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:managed_file_transfer:12.2.1.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:managed_file_transfer:12.2.1.4.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:middleware_common_libraries_and_tools:12.2.1.4.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:payment_interface:19.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:payment_interface:20.3:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_customer_insights:15.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_customer_insights:16.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_data_extractor_for_merchandising:15.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_data_extractor_for_merchandising:16.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_eftlink:21.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_financial_integration:16.0.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_financial_integration:19.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.0.4.13:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.1.3.5:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.1.3.14:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:15.0.3.3:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:15.0.3.8:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:16.0.3.7:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:taleo_platform:*:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Aug. 21, 2022

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202208-34 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 25, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujul2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 02, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Vendor Advisory
    Changed CPE Configuration OR *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 8.5.60 up to (excluding) 8.5.72 *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 9.0.4 up to (excluding) 9.0.54 *cpe:2.3:a:apache:tomcat:10.0.0:milestone10:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 10.0.1 up to (excluding) 10.0.12 *cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone2:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone3:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone4:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone5:*:*:*:*:*:* OR *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 8.5.60 up to (excluding) 8.5.72 *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 9.0.40 up to (excluding) 9.0.54 *cpe:2.3:a:apache:tomcat:10.0.0:milestone10:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 10.0.1 up to (excluding) 10.0.12 *cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone2:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone3:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone4:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone5:*:*:*:*:*:*
    Changed CPE Configuration OR *cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:* versions from (including) 8.0.0.0 up to (including) 8.5.0.2 *cpe:2.3:a:oracle:hospitality_cruise_shipboard_property_management_system:20.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.1:*:*:*:*:*:*:* OR *cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:* versions from (including) 8.0.0.0 up to (including) 8.5.0.2 *cpe:2.3:a:oracle:hospitality_cruise_shipboard_property_management_system:20.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:middleware_common_libraries_and_tools:12.2.1.4.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:payment_interface:19.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:payment_interface:20.3:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_customer_insights:15.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_customer_insights:16.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_data_extractor_for_merchandising:15.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_data_extractor_for_merchandising:16.0.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_eftlink:21.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_financial_integration:16.0.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_financial_integration:19.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.0.4.13:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.1.3.5:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:14.1.3.14:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:15.0.3.3:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:15.0.3.8:*:*:*:*:*:*:* *cpe:2.3:a:oracle:retail_store_inventory_management:16.0.3.7:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:taleo_platform:*:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 20, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 29, 2022

    Action Type Old Value New Value
    Changed Reference Type https://kc.mcafee.com/corporate/index?page=content&id=SB10379 No Types Assigned https://kc.mcafee.com/corporate/index?page=content&id=SB10379 Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpujan2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:* versions from (including) 8.0.0.0 up to (including) 8.5.0.2 *cpe:2.3:a:oracle:hospitality_cruise_shipboard_property_management_system:20.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:sd-wan_edge:9.1:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 23, 2022

    Action Type Old Value New Value
    Added Reference https://kc.mcafee.com/corporate/index?page=content&id=SB10379 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 07, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujan2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Dec. 04, 2021

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20211104-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20211104-0001/ Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2021/dsa-5009 No Types Assigned https://www.debian.org/security/2021/dsa-5009 Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:netapp:management_services_for_element_software_and_netapp_hci:-:*:*:*:*:*:*:* OR *cpe:2.3:a:netapp:hci:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:management_services_for_element_software:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 12, 2021

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2021/dsa-5009 [No Types Assigned]
    Added Reference https://security.netapp.com/advisory/ntap-20211104-0001/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 10, 2021

    Action Type Old Value New Value
    Removed Reference https://security.netapp.com/advisory/ntap-20211104-0001/ [Third Party Advisory]
  • Modified Analysis by [email protected]

    Nov. 05, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784@%3Ccommits.myfaces.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784@%3Ccommits.myfaces.apache.org%3E Mailing List, Patch, Vendor Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20211104-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20211104-0001/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:netapp:management_services_for_element_software_and_netapp_hci:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 04, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20211104-0001/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 21, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784@%3Ccommits.myfaces.apache.org%3E [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 20, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E Mailing List, Vendor Advisory
    Added CWE NIST CWE-772
    Added CPE Configuration OR *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 8.5.60 up to (excluding) 8.5.72 *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 9.0.4 up to (excluding) 9.0.54 *cpe:2.3:a:apache:tomcat:10.0.0:milestone10:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 10.0.1 up to (excluding) 10.0.12 *cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone2:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone3:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone4:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:10.1.0:milestone5:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-42340 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-42340 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.71 }} 0.78%

score

0.90583

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: