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CVE-2021-41079

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Date: September 16, 2021

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.

Language: Java

Severity Score

Related Resources (14)

https://www.debian.org/security/2021/dsa-4986
https://lists.apache.org/thread.html/r6b6b674e3f168dd010e67dbe6848b866e2acf26371452fdae313b98a%40%3Cusers.tomcat.apache.org%3E
https://lists.debian.org/debian-lts-announce/2021/09/msg00012.html
https://access.redhat.com/security/cve/CVE-2021-41079
https://nvd.nist.gov/vuln/detail/CVE-2021-41079
https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6264e0a58e2df5c6799434%40%3Cannounce.tomcat.apache.org%3E
https://lists.apache.org/thread.html/rb4de81ac647043541a32881099aa6eb5a23f1b7fd116f713f8ab9dbe%40%3Cdev.tomcat.apache.org%3E
https://security.netapp.com/advisory/ntap-20211008-0005/
https://github.com/apache/tomcat
https://github.com/apache/tomcat/commit/34115fb3c83f6cd97772232316a492a4cc5729e0
https://lists.apache.org/thread.html/rb4de81ac647043541a32881099aa6eb5a23f1b7fd116f713f8ab9dbe@%3Cdev.tomcat.apache.org%3E
https://security.netapp.com/advisory/ntap-20211008-0005
https://lists.apache.org/thread.html/r6b6b674e3f168dd010e67dbe6848b866e2acf26371452fdae313b98a@%3Cusers.tomcat.apache.org%3E
https://www.mend.io/vulnerability-database/CVE-2021-41079

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-835

Top Fix

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Upgrade Version

Upgrade to version org.apache.tomcat:tomcat-coyote:8.5.64,9.0.44,10.0.4;org.apache.tomcat.embed:tomcat-embed-core:8.5.64,9.0.44,10.0.4

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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