CVE-2021-1436

Cisco IOS XE SD-WAN Software Path Traversal Vulnerability

Severity Score

4.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to conduct path traversal attacks and obtain read access to sensitive files on an affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to an affected system. A successful exploit could allow the attacker to view arbitrary files on the affected system.

Una vulnerabilidad en la CLI del Software Cisco IOS XE SD-WAN, podría permitir a un atacante local autenticado llevar a cabo ataques de salto de ruta y obtener acceso de lectura a archivos confidenciales en un sistema afectado. Esta vulnerabilidad es debido a una comprobación insuficiente de la entrada suministrada por el usuario. Un atacante podría explotar esta vulnerabilidad mediante el envío de una petición diseñada a un sistema afectado. Una explotación con éxito podría permitir al atacante visualizar archivos arbitrarios en el sistema afectado

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2020-11-13 CVE Reserved
2021-03-24 CVE Published
2023-03-08 EPSS Updated
2024-11-08 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-sdwpathtrav-nsrue2Mt	2023-11-07

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"				3.15.1xbs Search vendor "Cisco" for product "Ios Xe" and version "3.15.1xbs"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.15.2xbs Search vendor "Cisco" for product "Ios Xe" and version "3.15.2xbs"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.11.1 Search vendor "Cisco" for product "Ios Xe" and version "16.11.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.11.1a Search vendor "Cisco" for product "Ios Xe" and version "16.11.1a"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.11.1b Search vendor "Cisco" for product "Ios Xe" and version "16.11.1b"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.11.1c Search vendor "Cisco" for product "Ios Xe" and version "16.11.1c"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.11.1s Search vendor "Cisco" for product "Ios Xe" and version "16.11.1s"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.11.2 Search vendor "Cisco" for product "Ios Xe" and version "16.11.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1a Search vendor "Cisco" for product "Ios Xe" and version "16.12.1a"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1c Search vendor "Cisco" for product "Ios Xe" and version "16.12.1c"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1s Search vendor "Cisco" for product "Ios Xe" and version "16.12.1s"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1t Search vendor "Cisco" for product "Ios Xe" and version "16.12.1t"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1w Search vendor "Cisco" for product "Ios Xe" and version "16.12.1w"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1x Search vendor "Cisco" for product "Ios Xe" and version "16.12.1x"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1y Search vendor "Cisco" for product "Ios Xe" and version "16.12.1y"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1z Search vendor "Cisco" for product "Ios Xe" and version "16.12.1z"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.1za Search vendor "Cisco" for product "Ios Xe" and version "16.12.1za"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.2 Search vendor "Cisco" for product "Ios Xe" and version "16.12.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.2a Search vendor "Cisco" for product "Ios Xe" and version "16.12.2a"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.2s Search vendor "Cisco" for product "Ios Xe" and version "16.12.2s"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.2t Search vendor "Cisco" for product "Ios Xe" and version "16.12.2t"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.3 Search vendor "Cisco" for product "Ios Xe" and version "16.12.3"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.3a Search vendor "Cisco" for product "Ios Xe" and version "16.12.3a"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.3s Search vendor "Cisco" for product "Ios Xe" and version "16.12.3s"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.4 Search vendor "Cisco" for product "Ios Xe" and version "16.12.4"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.12.4a Search vendor "Cisco" for product "Ios Xe" and version "16.12.4a"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.1.1 Search vendor "Cisco" for product "Ios Xe" and version "17.1.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.1.1a Search vendor "Cisco" for product "Ios Xe" and version "17.1.1a"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.1.1s Search vendor "Cisco" for product "Ios Xe" and version "17.1.1s"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.1.1t Search vendor "Cisco" for product "Ios Xe" and version "17.1.1t"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.1.2 Search vendor "Cisco" for product "Ios Xe" and version "17.1.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.2.1 Search vendor "Cisco" for product "Ios Xe" and version "17.2.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.2.1a Search vendor "Cisco" for product "Ios Xe" and version "17.2.1a"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.2.1r Search vendor "Cisco" for product "Ios Xe" and version "17.2.1r"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.2.1v Search vendor "Cisco" for product "Ios Xe" and version "17.2.1v"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				17.2.2 Search vendor "Cisco" for product "Ios Xe" and version "17.2.2"		-		Affected