CVE-2021-30639
published 2021-07-12CVE-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…
PriorityP345high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
6.89%
93.3th percentile
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.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache | tomcat | — | — |
| apache_software_foundation | apache_tomcat | — | — |
| apache_software_foundation | apache_tomcat | — | — |
| apache_software_foundation | apache_tomcat | — | — |
| debian | tomcat9 | — | — |
| mcafee | epolicy_orchestrator | < 5.10.0 | 5.10.0 |
| mcafee | epolicy_orchestrator | — | — |
| oracle | big_data_spatial_and_graph | < 23.1 | 23.1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_apache7.5HIGH
vendor_debian7.5LOW
vendor_oracle7.5HIGH
vendor_redhat7.5HIGH
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OSV
Improper Handling of Exceptional Conditions in Apache Tomcat
osv·2021-08-13
CVE-2021-30639 [HIGH] Improper Handling of Exceptional Conditions in Apache Tomcat
Improper Handling of Exceptional Conditions in Apache Tomcat
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.
GHSA
Improper Handling of Exceptional Conditions in Apache Tomcat
ghsa·2021-08-13
CVE-2021-30639 [HIGH] CWE-755 Improper Handling of Exceptional Conditions in Apache Tomcat
Improper Handling of Exceptional Conditions in Apache Tomcat
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.
OSV
CVE-2021-30639: A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service
osv·2021-07-12·CVSS 7.5
CVE-2021-30639 [HIGH] CVE-2021-30639: A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service
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.
Oracle
Oracle Oracle Siebel CRM Risk Matrix: Marketing (Apache Tomcat) — CVE-2021-30639
vendor_oracle·2022-10-15·CVSS 7.5
CVE-2021-30639 [HIGH] Oracle Oracle Siebel CRM Risk Matrix: Marketing (Apache Tomcat) — CVE-2021-30639
Oracle Oracle Siebel CRM Risk Matrix: Marketing (Apache Tomcat) vulnerability
CVE: CVE-2021-30639
CVSS: 7.5
Protocol: HTTP
Remote exploit: Yes
Affected versions: Network
Advisory: cpuoct2022 (OCT 2022)
Oracle
Oracle Oracle Big Data Graph Risk Matrix: Big Data Graph (Apache Tomcat) — CVE-2021-30639
vendor_oracle·2022-01-15·CVSS 7.5
CVE-2021-30639 [HIGH] Oracle Oracle Big Data Graph Risk Matrix: Big Data Graph (Apache Tomcat) — CVE-2021-30639
Oracle Oracle Big Data Graph Risk Matrix: Big Data Graph (Apache Tomcat) vulnerability
CVE: CVE-2021-30639
CVSS: 7.5
Protocol: HTTP
Remote exploit: Yes
Affected versions: Network
Advisory: cpujan2022 (JAN 2022)
Red Hat
tomcat: non-blocking I/O error flag is not reset between requests
vendor_redhat·2021-07-12·CVSS 7.5
CVE-2021-30639 [HIGH] CWE-459 tomcat: non-blocking I/O error flag is not reset between requests
tomcat: non-blocking I/O error flag is not reset between requests
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.
A flaw was found in Apache Tomcat. This flaw all
Debian
CVE-2021-30639: tomcat9 - A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial...
vendor_debian·2021·CVSS 7.5
CVE-2021-30639 [HIGH] CVE-2021-30639: tomcat9 - A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
Apache
Apache tomcat: CVE-2021-30639
vendor_apache·CVSS 7.5
CVE-2021-30639 [HIGH] Apache tomcat: CVE-2021-30639
Apache tomcat: CVE-2021-30639
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 was fixed with commit 411caf29 . This issue was reported publicly as 65203 . Affects: 8.5.64 10 March 2021 Fixed in Apache Tomcat 8.5.64 Important: Denial of Service
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://kc.mcafee.com/corporate/index?page=content&id=SB10366https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf%40%3Cdev.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%40%3Cannounce.tomcat.apache.org%3Ehttps://security.gentoo.org/glsa/202208-34https://security.netapp.com/advisory/ntap-20210827-0007/https://www.oracle.com/security-alerts/cpujan2022.htmlhttps://kc.mcafee.com/corporate/index?page=content&id=SB10366https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf%40%3Cdev.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf%40%3Cusers.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%40%3Cannounce.tomcat.apache.org%3Ehttps://security.gentoo.org/glsa/202208-34https://security.netapp.com/advisory/ntap-20210827-0007/https://www.oracle.com/security-alerts/cpujan2022.html
2021-07-12
Published