GHSA-44qp-qhfv-c7f6
Improper Handling of Exceptional Conditions in Apache Tomcat
At a glance
- Published
- Updated
- CVE
- CVE-2021-30639
- Aliases
- BIT-tomcat-2021-30639
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.apache.tomcat:tomcat | introduced 10.0.3, fixed 10.0.5 |
| Maven · org.apache.tomcat:tomcat | introduced 9.0.0, fixed 9.0.45 |
| Maven · org.apache.tomcat:tomcat | introduced 0, fixed 8.5.65 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-30639 ADVISORY
- https://kc.mcafee.com/corporate/index?page=content&id=SB10366 WEB
- https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cdev.tomcat.apache.org%3E WEB
- https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cusers.tomcat.apache.org%3E WEB
- https://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%40%3Cannounce.tomcat.apache.org%3E WEB
- https://security.gentoo.org/glsa/202208-34 WEB
- https://security.netapp.com/advisory/ntap-20210827-0007 WEB
- https://www.oracle.com/security-alerts/cpujan2022.html WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |