CVE-2021-22207

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-04-23 · updated 2026-06-17
Weakness: CWE-770

Description

Excessive memory consumption in MS-WSP dissector in Wireshark 3.4.0 to 3.4.4 and 3.2.0 to 3.2.12 allows denial of service via packet injection or crafted capture file

Affected products

Debian Linux: 9.0, 10.0, 11.0
Fedoraproject Fedora: 33, 34
Oracle Corporation Oracle ZFS Storage Appliance Kit: 8.8
Wireshark Foundation Wireshark: from 3.2.0 through 3.2.12; from 3.4.0 through 3.4.4

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22207.json
https://gitlab.com/wireshark/wireshark/-/issues/17331
https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GIWWO27HV4HUKXV6NH6ULHCRAQB26DMD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NL7ZTMMWIEPHHFK3ONRKATWE7CLIGLFD/
https://security.gentoo.org/glsa/202107-21
https://www.debian.org/security/2021/dsa-5019
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.wireshark.org/security/wnpa-sec-2021-04.html
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22207.json
https://gitlab.com/wireshark/wireshark/-/issues/17331
https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html

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