CVE-2021-22191

Gentoo Linux Security Advisory 202107-21

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Improper URL handling in Wireshark 3.4.0 to 3.4.3 and 3.2.0 to 3.2.11 could allow remote code execution via via packet injection or crafted capture file.

Un manejo inapropiado de la URL en Wireshark versiones 3.4.0 hasta 3.4.3 y versiones 3.2.0 hasta 3.2.1,1 podría permitir una ejecución de código remota por medio de una inyección de paquetes o un archivo de captura diseñado

An update that solves 9 vulnerabilities and has two fixes is now available. This update for wireshark, libvirt, sbc and libqt5-qtmultimedia fixes the following issues. Update wireshark to version 3.4.5 Including security fixes for. Wireshark could open unsafe URLs. MS-WSP dissector excessive memory consumption QUIC dissector crash Kafka dissector memory leak Multiple dissector memory leaks RTPS dissector memory leak USB HID dissector crash. Fixed USB HID dissector memory leak. Fixed USB HID dissector crash libqt5-qtmultimedia and sbc are necessary dependencies. Libvirt is needed to rebuild wireshark-plugin-libvirt.

*Credits: Lukas Euler

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-05 CVE Reserved
2021-03-11 CVE Published
2024-08-03 CVE Updated
2025-06-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CAPEC

References (6)

URL	Tag	Source
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22191.json	Third Party Advisory
https://gitlab.com/wireshark/wireshark/-/issues/17232	Issue Tracking
https://lists.debian.org/debian-lts-announce/2022/03/msg00041.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuApr2021.html	2022-05-27

URL	Date	SRC
https://security.gentoo.org/glsa/202107-21	2022-05-27
https://www.wireshark.org/security/wnpa-sec-2021-03.html	2022-05-27

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 <= 3.2.11 Search vendor "Wireshark" for product "Wireshark" and version " >= 3.2.0 <= 3.2.11"		-		Affected
Wireshark Search vendor "Wireshark"		Wireshark Search vendor "Wireshark" for product "Wireshark"				>= 3.4.0 <= 3.4.3 Search vendor "Wireshark" for product "Wireshark" and version " >= 3.4.0 <= 3.4.3"		-		Affected
Oracle Search vendor "Oracle"		Zfs Storage Appliance Search vendor "Oracle" for product "Zfs Storage Appliance"				8.8 Search vendor "Oracle" for product "Zfs Storage Appliance" and version "8.8"		-		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