CVE-2020-3511
Cisco IOS and IOS XE Software ISDN Q.931 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
-
*SSVC
Descriptions
A vulnerability in the ISDN subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the ISDN Q.931 messages are processed. An attacker could exploit this vulnerability by sending a malicious ISDN Q.931 message to an affected device. A successful exploit could allow the attacker to cause the process to crash, resulting in a reload of the affected device.
Una vulnerabilidad en el subsistema ISDN de Cisco IOS Software y Cisco IOS XE Software, podría permitir a un atacante adyacente no autenticado causar una recarga de un dispositivo afectado, resultando en una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una comprobación insuficiente de la entrada cuando son procesados los mensajes ISDN Q.931. Un atacante podría explotar esta vulnerabilidad mediante el envío de un mensaje ISDN Q.931 malicioso hacia un dispositivo afectado. Una explotación con éxito podría permitir al atacante causar que el proceso se bloquee, resultando en una recarga del dispositivo afectado.
*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:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2019-12-12 CVE Reserved
- 2020-09-24 CVE Published
- 2023-06-10 EPSS Updated
- 2024-09-17 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
CAPEC
References (1)
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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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-4g Integrated Services Router Search vendor "Cisco" for product "1100-4g Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-4gltegb Integrated Services Router Search vendor "Cisco" for product "1100-4gltegb Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-4gltena Integrated Services Router Search vendor "Cisco" for product "1100-4gltena Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-6g Integrated Services Router Search vendor "Cisco" for product "1100-6g Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 1100-lte Integrated Services Router Search vendor "Cisco" for product "1100-lte Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 422 Integrated Services Router Search vendor "Cisco" for product "422 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4321\/k9-rf Integrated Services Router Search vendor "Cisco" for product "4321\/k9-rf Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4321\/k9-ws Integrated Services Router Search vendor "Cisco" for product "4321\/k9-ws Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4321\/k9 Integrated Services Router Search vendor "Cisco" for product "4321\/k9 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4331\/k9-rf Integrated Services Router Search vendor "Cisco" for product "4331\/k9-rf Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4331\/k9-ws Integrated Services Router Search vendor "Cisco" for product "4331\/k9-ws Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4331\/k9 Integrated Services Router Search vendor "Cisco" for product "4331\/k9 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4351\/k9-rf Integrated Services Router Search vendor "Cisco" for product "4351\/k9-rf Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4351\/k9-ws Integrated Services Router Search vendor "Cisco" for product "4351\/k9-ws Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | 4351\/k9 Integrated Services Router Search vendor "Cisco" for product "4351\/k9 Integrated Services Router" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
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" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1001-hx Search vendor "Cisco" for product "Asr1001-hx" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1001-hx-rf Search vendor "Cisco" for product "Asr1001-hx-rf" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1001-x Search vendor "Cisco" for product "Asr1001-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1001-x-rf Search vendor "Cisco" for product "Asr1001-x-rf" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1001-x-ws Search vendor "Cisco" for product "Asr1001-x-ws" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1002-hx Search vendor "Cisco" for product "Asr1002-hx" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1002-hx-rf Search vendor "Cisco" for product "Asr1002-hx-rf" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1002-hx-ws Search vendor "Cisco" for product "Asr1002-hx-ws" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1002-x Search vendor "Cisco" for product "Asr1002-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1002-x-rf Search vendor "Cisco" for product "Asr1002-x-rf" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr1002-x-ws Search vendor "Cisco" for product "Asr1002-x-ws" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xe Search vendor "Cisco" for product "Ios Xe" | 15.1\(4\)m Search vendor "Cisco" for product "Ios Xe" and version "15.1\(4\)m" | - |
Affected
| in | Cisco Search vendor "Cisco" | Csr1000v Search vendor "Cisco" for product "Csr1000v" | - | - |
Safe
|