CVE-2021-30639

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-30639
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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://kc.mcafee.com/corporate/index?page=content&id=SB10366 Third Party Advisory
https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf%40%3Cusers.tomcat.apache.org%3E
https://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%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-20210827-0007/ Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:apache:tomcat:8.5.64:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:9.0.44:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:10.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:10.0.4:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:a:mcafee:epolicy_orchestrator:*:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:-:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_1:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_10:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_2:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_3:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_4:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_5:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_6:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_7:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_8:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_9:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:a:oracle:big_data_spatial_and_graph:*:*:*:*:*:*:*:*
History

07 Nov 2023, 03:33

Type Values Removed Values Added
References
  • {'url': 'https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cdev.tomcat.apache.org%3E', 'name': '[tomcat-dev] 20210712 RE: [SECURITY] CVE-2021-30639 Apache Tomcat DoS', 'tags': ['Mailing List', 'Vendor Advisory'], 'refsource': 'MLIST'}
  • {'url': 'https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cusers.tomcat.apache.org%3E', 'name': '[tomcat-users] 20210712 RE: [SECURITY] CVE-2021-30639 Apache Tomcat DoS', 'tags': ['Mailing List', 'Vendor Advisory'], 'refsource': 'MLIST'}
  • () https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf%40%3Cusers.tomcat.apache.org%3E -
  • () https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf%40%3Cdev.tomcat.apache.org%3E -

27 Oct 2022, 01:08

Type Values Removed Values Added
References (GENTOO) https://security.gentoo.org/glsa/202208-34 - (GENTOO) https://security.gentoo.org/glsa/202208-34 - Third Party Advisory

21 Aug 2022, 05:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202208-34 -

01 Mar 2022, 18:10

Type Values Removed Values Added
References (MISC) https://www.oracle.com/security-alerts/cpujan2022.html - (MISC) https://www.oracle.com/security-alerts/cpujan2022.html - Patch, Third Party Advisory
CPE cpe:2.3:a:oracle:big_data_spatial_and_graph:*:*:*:*:*:*:*:*
First Time Oracle big Data Spatial And Graph
Oracle

07 Feb 2022, 16:15

Type Values Removed Values Added
References
  • (MISC) https://www.oracle.com/security-alerts/cpujan2022.html -

10 Dec 2021, 02:18

Type Values Removed Values Added
References (CONFIRM) https://kc.mcafee.com/corporate/index?page=content&id=SB10366 - (CONFIRM) https://kc.mcafee.com/corporate/index?page=content&id=SB10366 - Third Party Advisory
CPE cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_4:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_6:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_2:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_10:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_3:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_8:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_9:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:-:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_7:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_5:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:*:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_1:*:*:*:*:*:*

22 Oct 2021, 08:15

Type Values Removed Values Added
References
  • (CONFIRM) https://kc.mcafee.com/corporate/index?page=content&id=SB10366 -

21 Sep 2021, 18:18

Type Values Removed Values Added
References (CONFIRM) https://security.netapp.com/advisory/ntap-20210827-0007/ - (CONFIRM) https://security.netapp.com/advisory/ntap-20210827-0007/ - Third Party Advisory

27 Aug 2021, 07:15

Type Values Removed Values Added
References
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20210827-0007/ -

15 Jul 2021, 18:05

Type Values Removed Values Added
CWE CWE-755
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5
CPE cpe:2.3:a:apache:tomcat:9.0.44:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:10.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:8.5.64:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:10.0.4:*:*:*:*:*:*:*
References
  • (MLIST) https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cusers.tomcat.apache.org%3E - Mailing List, Vendor Advisory
  • (MLIST) https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cdev.tomcat.apache.org%3E - Mailing List, Vendor Advisory
References (MISC) https://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%40%3Cannounce.tomcat.apache.org%3E - (MISC) https://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%40%3Cannounce.tomcat.apache.org%3E - Mailing List, Vendor Advisory

12 Jul 2021, 15:33

Type Values Removed Values Added
New CVE
Information

Published : 2021-07-12 15:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-30639

Mitre link : CVE-2021-30639

CVE.ORG link : CVE-2021-30639

JSON object : View

Products Affected

mcafee

  • epolicy_orchestrator

oracle

  • big_data_spatial_and_graph

apache

  • tomcat
CWE
CWE-755

Improper Handling of Exceptional Conditions