Vulnerability Monitor

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CVE-2021-4186

Crash in the Gryphon dissector in Wireshark 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file

Published

2021-12-30T22:15:10.420

Last Modified

2025-11-03T22:15:53.887

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	wireshark	wireshark	≤ 3.4.10	Yes
Operating System	fedoraproject	fedora	34	Yes
Operating System	fedoraproject	fedora	35	Yes

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4186.json Third Party Advisory ([email protected])
https://gitlab.com/wireshark/wireshark/-/issues/17737 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2EY2VFBU3YGGWI5BW4XKT3F37MYGEQUD/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3FH2J57GDA2WMBS6J56F6QQRA6BXQQFZ/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/ ([email protected])
https://security.gentoo.org/glsa/202210-04 Third Party Advisory ([email protected])
https://www.wireshark.org/security/wnpa-sec-2021-16.html Vendor Advisory ([email protected])
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4186.json Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gitlab.com/wireshark/wireshark/-/issues/17737 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2EY2VFBU3YGGWI5BW4XKT3F37MYGEQUD/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3FH2J57GDA2WMBS6J56F6QQRA6BXQQFZ/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/ (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202210-04 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.wireshark.org/security/wnpa-sec-2021-16.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)