CVE-2021-1621
Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability
Severity Score
7.4
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.
Una vulnerabilidad en el código de punt de Capa 2 de Cisco IOS XE Software podría permitir a un atacante adyacente y no autenticado causar una queue wedge en una interfaz que reciba tramas específicas de Capa 2, resultando en una condición de denegación de servicio (DoS). Esta vulnerabilidad es debido al manejo inapropiado de determinadas tramas de capa 2. Un atacante podría explotar esta vulnerabilidad mediante el envío de tramas específicas de capa 2 en el segmento al que está conectado el router. Una explotación con éxito podría permitir al atacante causar una queue wedge en la interfaz, resultando en una condición de DoS
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-11-13 CVE Reserved
- 2021-09-23 CVE Published
- 2024-06-07 EPSS Updated
- 2024-11-07 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-399: Resource Management Errors
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW | 2023-11-07 |
| URL | Date | SRC |
|---|
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 Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1000 Integrated Services Router Search vendor "Cisco" for product "1000 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-4g\/6g Integrated Services Router Search vendor "Cisco" for product "1100-4g\/6g Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-4p Integrated Services Router Search vendor "Cisco" for product "1100-4p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-8p Integrated Services Router Search vendor "Cisco" for product "1100-8p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100 Integrated Services Router Search vendor "Cisco" for product "1100 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1101-4p Integrated Services Router Search vendor "Cisco" for product "1101-4p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1101 Integrated Services Router Search vendor "Cisco" for product "1101 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1109-2p Integrated Services Router Search vendor "Cisco" for product "1109-2p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1109-4p Integrated Services Router Search vendor "Cisco" for product "1109-4p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1109 Integrated Services Router Search vendor "Cisco" for product "1109 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1111x-8p Integrated Services Router Search vendor "Cisco" for product "1111x-8p Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1111x Integrated Services Router Search vendor "Cisco" for product "1111x Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 111x Integrated Services Router Search vendor "Cisco" for product "111x Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1120 Integrated Services Router Search vendor "Cisco" for product "1120 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1160 Integrated Services Router Search vendor "Cisco" for product "1160 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4000 Integrated Services Router Search vendor "Cisco" for product "4000 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4221 Integrated Services Router Search vendor "Cisco" for product "4221 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4321 Integrated Services Router Search vendor "Cisco" for product "4321 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4331 Integrated Services Router Search vendor "Cisco" for product "4331 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4351 Integrated Services Router Search vendor "Cisco" for product "4351 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4431 Integrated Services Router Search vendor "Cisco" for product "4431 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4451-x Integrated Services Router Search vendor "Cisco" for product "4451-x Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4451 Integrated Services Router Search vendor "Cisco" for product "4451 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4461 Integrated Services Router Search vendor "Cisco" for product "4461 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1000 Search vendor "Cisco" for product "Asr 1000" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1000-x Search vendor "Cisco" for product "Asr 1000-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001 Search vendor "Cisco" for product "Asr 1001" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001-hx Search vendor "Cisco" for product "Asr 1001-hx" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001-hx R Search vendor "Cisco" for product "Asr 1001-hx R" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001-x Search vendor "Cisco" for product "Asr 1001-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1001-x R Search vendor "Cisco" for product "Asr 1001-x R" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002 Search vendor "Cisco" for product "Asr 1002" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002-hx Search vendor "Cisco" for product "Asr 1002-hx" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002-hx R Search vendor "Cisco" for product "Asr 1002-hx R" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002-x Search vendor "Cisco" for product "Asr 1002-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1002-x R Search vendor "Cisco" for product "Asr 1002-x R" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1004 Search vendor "Cisco" for product "Asr 1004" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1006 Search vendor "Cisco" for product "Asr 1006" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1006-x Search vendor "Cisco" for product "Asr 1006-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1009-x Search vendor "Cisco" for product "Asr 1009-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1013 Search vendor "Cisco" for product "Asr 1013" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 1023 Search vendor "Cisco" for product "Asr 1023" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Csr 1000v Search vendor "Cisco" for product "Csr 1000v" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | < 17.3.1 Search vendor "Cisco" for product "Ios Xe" and version " < 17.3.1" | - |
Affected
| in | Cisco Search vendor "Cisco" | Isrv Search vendor "Cisco" for product "Isrv" | - | - |
Safe
|