Vulnerabilities > CVE-2021-39921 - NULL Pointer Dereference vulnerability in multiple products

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

NVD

Published: 2021-11-19

Updated: 2024-11-21

Summary

NULL pointer exception in the Modbus dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

Vulnerable Configurations

Part	Description	Count
Application	Wireshark Wireshark Wireshark 3.2.0 Wireshark Wireshark 3.2.1 Wireshark Wireshark 3.2.2 Wireshark Wireshark 3.2.3 Wireshark Wireshark 3.2.4 Wireshark Wireshark 3.2.5 Wireshark Wireshark 3.2.6 Wireshark Wireshark 3.2.7 Wireshark Wireshark 3.2.8 Wireshark Wireshark 3.2.9 Wireshark Wireshark 3.2.10 Wireshark Wireshark 3.2.11 Wireshark Wireshark 3.2.12 Wireshark Wireshark 3.2.13 Wireshark Wireshark 3.2.14 Wireshark Wireshark 3.2.15 Wireshark Wireshark 3.2.16 Wireshark Wireshark 3.2.17 Wireshark Wireshark 3.4.0 Wireshark Wireshark 3.4.1 Wireshark Wireshark 3.4.2 Wireshark Wireshark 3.4.3 Wireshark Wireshark 3.4.4 Wireshark Wireshark 3.4.5 Wireshark Wireshark 3.4.6 Wireshark Wireshark 3.4.7 Wireshark Wireshark 3.4.8 Wireshark Wireshark 3.4.9	31
OS	Fedoraproject Fedoraproject Fedora 34 Fedoraproject Fedora 35	2
OS	Debian Debian Debian Linux 9.0	1

Common Weakness Enumeration (CWE)

CWE-476 - NULL Pointer Dereference

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References