Executive Summary

Informations
Name CVE-2021-30639 First vendor Publication 2021-07-12
Vendor Cve Last vendor Modification 2022-03-01

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service. An error introduced as part of a change to improve error handling during non-blocking I/O meant that the error flag associated with the Request object was not reset between requests. This meant that once a non-blocking I/O error occurred, all future requests handled by that request object would fail. Users were able to trigger non-blocking I/O errors, e.g. by dropping a connection, thereby creating the possibility of triggering a DoS. Applications that do not use non-blocking I/O are not exposed to this vulnerability. This issue affects Apache Tomcat 10.0.3 to 10.0.4; 9.0.44; 8.5.64.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30639

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-755 Improper Handling of Exceptional Conditions

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 4
Application 50
Application 1

Sources (Detail)

Source Url
CONFIRM https://kc.mcafee.com/corporate/index?page=content&id=SB10366
https://security.netapp.com/advisory/ntap-20210827-0007/
MISC https://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd5...
https://www.oracle.com/security-alerts/cpujan2022.html
MLIST https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f0444...
https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f0444...

Alert History

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Date Informations
2022-04-24 01:57:05
  • Multiple Updates
2022-03-01 21:23:25
  • Multiple Updates
2022-02-07 21:23:16
  • Multiple Updates
2021-12-10 09:23:07
  • Multiple Updates
2021-10-22 13:23:14
  • Multiple Updates
2021-09-22 00:23:10
  • Multiple Updates
2021-08-27 13:23:05
  • Multiple Updates
2021-07-16 00:22:49
  • Multiple Updates
2021-07-14 01:41:34
  • Multiple Updates
2021-07-14 01:41:16
  • Multiple Updates
2021-07-13 17:22:50
  • Multiple Updates
2021-07-12 21:23:11
  • First insertion