Vulnerability Name:

CVE-2021-4186 (CCN-216390)

Assigned:2021-12-29
Published:2021-12-29
Updated:2022-11-04
Summary: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
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-4186

Source: XF
Type: UNKNOWN
wireshark-cve20214186-dos(216390)

Source: CONFIRM
Type: Third Party Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4186.json

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://gitlab.com/wireshark/wireshark/-/issues/17737

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-a3d70b50f0

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-48b86d586f

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-30411cb3c4

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-1daf93c51d

Source: GENTOO
Type: Third Party Advisory
GLSA-202210-04

Source: CCN
Type: Mend Vulnerability Database
CVE-2021-4186

Source: CCN
Type: Wireshark advisory wnpa-sec-2021-16
Gryphon dissector crash

Source: MISC
Type: Vendor Advisory
https://www.wireshark.org/security/wnpa-sec-2021-16.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:wireshark:wireshark:*:*:*:*:*:*:*:* (Version >= 3.4.0 and <= 3.4.10)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:wireshark:wireshark:3.4.0:*:*:*:*:*:*:*
  • OR cpe:/a:wireshark:wireshark:3.4.9:*:*:*:*:*:*:*
  • OR cpe:/a:wireshark:wireshark:3.4.10:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7698
    P
    		libwireshark15-3.6.13-150000.3.89.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7983
    P
    		wireshark-devel-3.6.13-150000.3.89.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:768
    P
    		Security update for wireshark (Moderate)
    2022-09-19
    BACK
    wireshark wireshark *
    fedoraproject fedora 34
    fedoraproject fedora 35
    wireshark wireshark 3.4.0
    wireshark wireshark 3.4.9
    wireshark wireshark 3.4.10