// For flags

CVE-2021-39928

Gentoo Linux Security Advisory 202210-04

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

NULL pointer exception in the IEEE 802.11 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

Una excepción de puntero NULL en el disector IEEE 802.11 en Wireshark versiones 3.4.0 a 3.4.9 y 3.2.0 a 3.2.17, permite una denegación de servicio por medio de la inyección de paquetes o de un archivo de captura diseñado.

An update that fixes 8 vulnerabilities is now available. This update for wireshark fixes the following issues. IPPUSB dissector crash. Modbus dissector crash. C12.22 dissector crash. Bluetooth DHT dissector large loop. Bluetooth SDP dissector crash. Bluetooth HCI_ISO dissector crash. IEEE 802.11 dissector crash. Bluetooth DHT dissector crash. This update was imported from the SUSE:SLE-15:Update update project.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-08-23 CVE Reserved
  • 2021-11-18 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-08-04 First Exploit
  • 2025-05-26 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-476: NULL Pointer Dereference
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Wireshark
Search vendor "Wireshark"
Wireshark
Search vendor "Wireshark" for product "Wireshark"
>= 3.2.0 < 3.2.18
Search vendor "Wireshark" for product "Wireshark" and version " >= 3.2.0 < 3.2.18"
-
Affected
Wireshark
Search vendor "Wireshark"
Wireshark
Search vendor "Wireshark" for product "Wireshark"
>= 3.4.0 < 3.4.10
Search vendor "Wireshark" for product "Wireshark" and version " >= 3.4.0 < 3.4.10"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
34
Search vendor "Fedoraproject" for product "Fedora" and version "34"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
35
Search vendor "Fedoraproject" for product "Fedora" and version "35"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected