NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file
https://gitlab.com/wireshark/wireshark/-/issues/17705
https://www.wireshark.org/security/wnpa-sec-2021-15.html
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39920.json
Source: MITRE
Published: 2021-11-18
Updated: 2022-10-28
Type: CWE-476
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH