CVE-2021-30639
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
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.
Overview
- CVE ID
- CVE-2021-30639
- Assigner
- security@apache.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-07-12T15:15:08
- Last Modified Date
- 2022-10-27T01:08:47
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:apache:tomcat:8.5.64:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:apache:tomcat:9.0.44:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:apache:tomcat:10.0.3:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:apache:tomcat:10.0.4:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:*:*:*:*:*:*:*:* | 1 | OR | 5.10.0 | |
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_10:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_3:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_4:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_5:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_6:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_7:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_8:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_9:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:oracle:big_data_spatial_and_graph:*:*:*:*:*:*:*:* | 1 | OR | 23.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://kc.mcafee.com/corporate/index?page=content&id=SB10366 | Third Party Advisory |
| https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cdev.tomcat.apache.org%3E | Mailing List Vendor Advisory |
| https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cusers.tomcat.apache.org%3E | Mailing List Vendor Advisory |
| 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 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-30639 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30639 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:47:55 | Added to TrackCVE | |||
| 2022-12-05 05:47:06 | 2021-07-12T15:15Z | 2021-07-12T15:15:08 | CVE Published Date | updated |
| 2022-12-05 05:47:06 | 2022-10-27T01:08:47 | CVE Modified Date | updated | |
| 2022-12-05 05:47:06 | Analyzed | Vulnerability Status | updated | |
| 2022-12-05 05:47:10 | References | updated |