// For flags

CVE-2019-1756

Cisco IOS XE Software Command Injection Vulnerability

Severity Score

7.2
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in Cisco IOS XE Software could allow an authenticated, remote attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability occurs because the affected software improperly sanitizes user-supplied input. An attacker who has valid administrator access to an affected device could exploit this vulnerability by supplying a username with a malicious payload in the web UI and subsequently making a request to a specific endpoint in the web UI. A successful exploit could allow the attacker to run arbitrary commands as the root user, allowing complete compromise of the system.

Una vulnerabilidad en el software Cisco IOS XE podría permitir que un atacante remoto autenticado ejecute comandos en el shell de Linux subyacente de un dispositivo afectado con privilegios root. La vulnerabilidad ocurre debido a que el software afectado sanea incorrectamente las entradas proporcionadas por el usuario. Un atacante que tenga acceso válido de administrador a un dispositivo afectado podría explotar esta vulnerabilidad proporcionando un nombre de usuario con una carga útil maliciosa en la interfaz web y, después, realizando una petición a un endpoint específico de la interfaz web. Su explotación con éxito podría permitir que el atacante ejecute comandos arbitrarios como usuario root, permitiendo el compromiso total del sistema.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-12-06 CVE Reserved
  • 2019-03-28 CVE Published
  • 2023-05-06 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
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
Search vendor "Cisco" for product "Ios"
11.0\(20.3\)
Search vendor "Cisco" for product "Ios" and version "11.0\(20.3\)"
-
Affected
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
16.9\(1\)
Search vendor "Cisco" for product "Ios" and version "16.9\(1\)"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
3.2.0ja
Search vendor "Cisco" for product "Ios Xe" and version "3.2.0ja"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.7.1
Search vendor "Cisco" for product "Ios Xe" and version "16.7.1"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.7.1a
Search vendor "Cisco" for product "Ios Xe" and version "16.7.1a"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.7.1b
Search vendor "Cisco" for product "Ios Xe" and version "16.7.1b"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.7.2
Search vendor "Cisco" for product "Ios Xe" and version "16.7.2"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.7.3
Search vendor "Cisco" for product "Ios Xe" and version "16.7.3"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.8.1
Search vendor "Cisco" for product "Ios Xe" and version "16.8.1"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.8.1a
Search vendor "Cisco" for product "Ios Xe" and version "16.8.1a"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.8.1b
Search vendor "Cisco" for product "Ios Xe" and version "16.8.1b"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.8.1c
Search vendor "Cisco" for product "Ios Xe" and version "16.8.1c"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.8.1d
Search vendor "Cisco" for product "Ios Xe" and version "16.8.1d"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.8.1e
Search vendor "Cisco" for product "Ios Xe" and version "16.8.1e"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.8.1s
Search vendor "Cisco" for product "Ios Xe" and version "16.8.1s"
-
Affected
Cisco
Search vendor "Cisco"
Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.8.2
Search vendor "Cisco" for product "Ios Xe" and version "16.8.2"
-
Affected