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CVE-2021-4186

Date: December 29, 2021

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

Language: C

Severity Score

6.3

Related Resources (18)

Url: https://www.wireshark.org/security/wnpa-sec-2021-16.html

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3FH2J57GDA2WMBS6J56F6QQRA6BXQQFZ/

Url: https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4186.json

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2EY2VFBU3YGGWI5BW4XKT3F37MYGEQUD/

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-4186

Url: https://security-tracker.debian.org/tracker/CVE-2021-4186

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/

Url: https://security.alpinelinux.org/vuln/CVE-2021-4186

Url: https://access.redhat.com/security/cve/CVE-2021-4186

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3FH2J57GDA2WMBS6J56F6QQRA6BXQQFZ/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2EY2VFBU3YGGWI5BW4XKT3F37MYGEQUD/

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-4186

Url: https://gitlab.com/wireshark/wireshark/-/issues/17737

Url: https://security.gentoo.org/glsa/202210-04

Url: https://www.mend.io/vulnerability-database/CVE-2021-4186

Severity Score

6.3

Weakness Type (CWE)

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:	6.3
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	LOW
Integrity (I):	LOW
Availability (A):	LOW

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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