CVE-2020-15897

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F allows remote attackers to cause traffic loss or incorrect forwarding of traffic via a malformed link-state PDU to the IS-IS router.

Arista EOS versiones anteriores a 4.21.12M, versiones 4.22.x anteriores a 4.22.7M, versiones 4.23.x anteriores a 4.23.5M y versiones 4.24.x anteriores a 4.24.2F, permite a atacantes remotos causar pérdida de tráfico o reenvío incorrecto de tráfico por medio de una PDU de estado de enlace malformado hacia el enrutador IS-IS

*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

2020-07-22 CVE Reserved
2020-10-26 CVE Published
2023-07-12 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://www.arista.com/en/support/advisories-notices/security-advisories/11760-security-advisory-54	2024-08-04

URL	Date	SRC

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"				< 4.21.12m Search vendor "Arista" for product "Eos" and version " < 4.21.12m"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				>= 4.22 < 4.22.7m Search vendor "Arista" for product "Eos" and version " >= 4.22 < 4.22.7m"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				>= 4.23 < 4.23.5m Search vendor "Arista" for product "Eos" and version " >= 4.23 < 4.23.5m"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				>= 4.24 < 4.24.2f Search vendor "Arista" for product "Eos" and version " >= 4.24 < 4.24.2f"		-		Affected