CVE-2019-18948

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was found in Arista EOS. Specific malformed ARP packets can impact the software forwarding of VxLAN packets. This issue is found in Arista’s EOS VxLAN code, which can allow attackers to crash the VxlanSwFwd agent. This affects EOS 4.21.8M and below releases in the 4.21.x train, 4.22.3M and below releases in the 4.22.x train, 4.23.1F and below releases in the 4.23.x train, and all releases in 4.15, 4.16, 4.17, 4.18, 4.19, 4.20 code train.

Se encontró un problema en Arista EOS. Los paquetes ARP malformados específicos pueden afectar el reenvío de software de los paquetes VxLAN. Este problema se encuentra en el código EOS VxLAN de Arista, que puede permitir a los atacantes bloquear el agente VxlanSwFwd. Esto afecta a EOS 4.21.8M y versiones anteriores en el tren 4.21.x, 4.22.3M y versiones anteriores en el tren 4.22.x, 4.23.1F y versiones anteriores en el tren 4.23.x, y todas las versiones en 4.15, 4.16, 4.17, 4.18, 4.19, 4.20 tren de código

*Credits: N/A

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

2019-11-13 CVE Reserved
2020-04-16 CVE Published
2023-03-07 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://www.arista.com/en/support/advisories-notices/security-advisories/10292-security-advisory-47	2021-07-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				>= 4.21.0 <= 4.21.8m Search vendor "Arista" for product "Eos" and version " >= 4.21.0 <= 4.21.8m"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				>= 4.22.0 <= 4.22.3m Search vendor "Arista" for product "Eos" and version " >= 4.22.0 <= 4.22.3m"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				>= 4.23.0 <= 4.23.1f Search vendor "Arista" for product "Eos" and version " >= 4.23.0 <= 4.23.1f"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				4.15 Search vendor "Arista" for product "Eos" and version "4.15"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				4.16 Search vendor "Arista" for product "Eos" and version "4.16"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				4.17 Search vendor "Arista" for product "Eos" and version "4.17"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				4.18 Search vendor "Arista" for product "Eos" and version "4.18"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				4.19 Search vendor "Arista" for product "Eos" and version "4.19"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				4.20 Search vendor "Arista" for product "Eos" and version "4.20"		-		Affected