CVE-2021-39920
HIGHWireshark 3.4.0-3.4.9 - Denial of Service via IPPUSB Dissector NULL Pointer Dereference
Title source: llmDescription
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
References (7)
Core 7
Core References
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/
Third Party Advisory vendor-advisory
https://www.debian.org/security/2021/dsa-5019
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202210-04
Third Party Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39920.json
Exploit, Issue Tracking, Third Party Advisory
https://gitlab.com/wireshark/wireshark/-/issues/17705
Vendor Advisory
https://www.wireshark.org/security/wnpa-sec-2021-15.html
Scores
CVSS v3
7.5
EPSS
0.0053
EPSS Percentile
67.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (3)
fedoraproject/fedora
34
fedoraproject/fedora
35
wireshark/wireshark
3.4.0 - 3.4.10
Published
Nov 18, 2021
Tracked Since
Feb 18, 2026