CVE-2021-39921 | BDVDB-2026-164659 Detail
Wireshark FoundationWireshark
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
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
No weakness recorded in the source data.
References#
- https://www.wireshark.org/security/wnpa-sec-2021-14.html
- https://gitlab.com/wireshark/wireshark/-/issues/17703
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39921.json
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/
- https://www.debian.org/security/2021/dsa-5019
- https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html
- https://security.gentoo.org/glsa/202210-04
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.