CVE-2021-41079CWE-20CWE-835

CVE-2021-41079

High · published September 16, 2021

CVSS v3.1
7.5
EPSS
7%
Percentile
94.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.07182 · 94.3th percentile
Weaknesses
CWE-20 · Improper Input Validation; CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2021-09-16T19:15Z
Affected products (7)
ProductVersionsFixed in
apache/tomcat≥ 8.5.0, < 8.5.648.5.64
apache/tomcat≥ 9.0.0, < 9.0.449.0.44
apache/tomcat≥ 10.0.0, ≤ 10.0.2—
debian/debian_linuxall versions—
debian/debian_linuxall versions—
debian/debian_linuxall versions—
netapp/management_services_for_element_software_and_netapp_hciall versions—
References (12)
https://lists.apache.org/thread.html/r6b6b674e3f168dd010e67dbe6848b866e2acf26371452fdae313b98a%40%3Cusers.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rb4de81ac647043541a32881099aa6eb5a23f1b7fd116f713f8ab9dbe%40%3Cdev.tomcat.apache.org%3E · [email protected]https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6264e0a58e2df5c6799434%40%3Cannounce.tomcat.apache.org%3E · [email protected]https://lists.debian.org/debian-lts-announce/2021/09/msg00012.html · [email protected]https://security.netapp.com/advisory/ntap-20211008-0005/ · [email protected]https://www.debian.org/security/2021/dsa-4986 · [email protected]https://lists.apache.org/thread.html/r6b6b674e3f168dd010e67dbe6848b866e2acf26371452fdae313b98a%40%3Cusers.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rb4de81ac647043541a32881099aa6eb5a23f1b7fd116f713f8ab9dbe%40%3Cdev.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6264e0a58e2df5c6799434%40%3Cannounce.tomcat.apache.org%3E · af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/09/msg00012.html · af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20211008-0005/ · af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4986 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 16 SEP 14:40Z
    Apache Tomcat DoS with unexpected TLS packet
    cvelistv5