CVE-2021-39921 Vulnerability Details

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CVE-2021-39921 Metadata Quick Info

CVE Published: 19/11/2021 | CVE Updated: 04/08/2024 | CVE Year: 2021
Source: GitLab | Vendor: Wireshark Foundation | Product: Wireshark
Status : PUBLISHED

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CVE-2021-39921 Description

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

Metrics

CVSS Version: 3.1 | Base Score: 7.5 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

l➤ Exploitability Metrics:
    Attack Vector (AV)* NETWORK
    Attack Complexity (AC)* LOW
    Privileges Required (PR)* NONE
    User Interaction (UI)* NONE
    Scope (S)* UNCHANGED

l➤ Impact Metrics:
    Confidentiality Impact (C)* NONE
    Integrity Impact (I)* NONE
    Availability Impact (A)* HIGH

Weakness Enumeration (CWE)

CWE-ID:
CWE Name: Null pointer dereference in Wireshark
Source: Wireshark Foundation

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-ID:
CAPEC Description:


Source: NVD (National Vulnerability Database).