CVE-2021-41079

CWE-20 — Improper Input ValidationCWE-835CWE-400 — Uncontrolled Resource Consumption12 documents8 sources
Severity
7.5HIGH
EPSS
0.1%
top 71.87%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Apache TomcatApache Software Foundation Apache TomcatDebian Debian Linux
Timeline
PublishedSep 16
Latest updateAug 1

Description

Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶NVDapache/tomcat8.5.0 — 8.5.64+2
▶Mavenorg.apache.tomcat:tomcat10.0.0 — 10.0.4+2
▶CVEListV5apache_software_foundation/apache_tomcatApache Tomcat 10 10.0.0-M1 to 10.0.2, Apache Tomcat 8.5 8.5.0 to 8.5.63, Apache Tomcat 9 9.0.0-M1 to 9.0.43+2
▶Debiantomcat9< 9.0.43-2~deb11u2+3

Also affects: Debian Linux 10.0, 11.0, 9.0

🔴Vulnerability Details

6
OSV
tomcat8, tomcat9 vulnerabilities↗2024-08-01
▶
OSV
tomcat9 vulnerabilities↗2022-03-31
▶
OSV
Infinite loop in Tomcat due to parsing error↗2021-09-20
▶
GHSA
Infinite loop in Tomcat due to parsing error↗2021-09-20
▶
CVEList
Apache Tomcat DoS with unexpected TLS packet↗2021-09-16
▶

📋Vendor Advisories

5
Ubuntu
Tomcat vulnerabilities↗2024-08-01
▶
Ubuntu
Tomcat vulnerabilities↗2022-03-31
▶
Red Hat
tomcat: Infinite loop while reading an unexpected TLS packet when using OpenSSL JSSE engine↗2021-09-15
▶
Debian
CVE-2021-41079: tomcat9 - Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did no...↗2021
▶
Apache
Apache tomcat: CVE-2021-41079↗
▶
CVE-2021-41079 (HIGH CVSS 7.5) | Apache Tomcat 8.5.0 to 8.5.63 | cvebase.io