// For flags

CVE-2022-20714

Cisco IOS XR Software for ASR 9000 Series Routers Lightspeed-Plus Line Cards Denial of Service Vulnerability

Severity Score

8.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A vulnerability in the data plane microcode of Lightspeed-Plus line cards for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the line card to reset. This vulnerability is due to the incorrect handling of malformed packets that are received on the Lightspeed-Plus line cards. An attacker could exploit this vulnerability by sending a crafted IPv4 or IPv6 packet through an affected device. A successful exploit could allow the attacker to cause the Lightspeed-Plus line card to reset, resulting in a denial of service (DoS) condition for any traffic that traverses that line card.

Una vulnerabilidad en el microcódigo del plano de datos de las tarjetas de línea Lightspeed-Plus para Cisco ASR 9000 Series Aggregation Services Routers podría permitir a un atacante remoto no autenticado causar el reinicio de la tarjeta de línea. Esta vulnerabilidad es debido al manejo incorrecto de paquetes malformados que son recibidos en las tarjetas de línea Lightspeed-Plus. Un atacante podría aprovechar esta vulnerabilidad mediante el envío de un paquete IPv4 o IPv6 diseñado mediante un dispositivo afectado. Una explotación con éxito podría permitir al atacante causar el reinicio de la tarjeta de línea Lightspeed-Plus, resultando en una condición de negación de servicio (DoS) para cualquier tráfico que salta esa tarjeta de línea

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
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:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2021-11-02 CVE Reserved
  • 2022-04-15 CVE Published
  • 2024-11-06 CVE Updated
  • 2024-11-19 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
  • CWE-126: Buffer Over-read
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Ios Xr
Search vendor "Cisco" for product "Ios Xr"
--
Affected
in Cisco
Search vendor "Cisco"
 Asr 9902
Search vendor "Cisco" for product "Asr 9902"
--
Safe
Cisco
Search vendor "Cisco"
 Ios Xr
Search vendor "Cisco" for product "Ios Xr"
--
Affected
in Cisco
Search vendor "Cisco"
 Asr 9903
Search vendor "Cisco" for product "Asr 9903"
--
Safe