CVE-2020-3243

Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple vulnerabilities in the REST API of Cisco UCS Director and Cisco UCS Director Express for Big Data may allow a remote attacker to bypass authentication or conduct directory traversal attacks on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Múltiples vulnerabilidades en la API REST de Cisco UCS Director y Cisco UCS Director Express para Big Data, pueden permitir a un atacante remoto omitir la autenticación o conducir ataques de salto de directorio sobre un dispositivo afectado. Para mayor información acerca de estas vulnerabilidades, consulte la sección Detalles de este aviso.

This vulnerability allows remote attackers to bypass authentication on affected installations of Cisco UCS Director. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the processing of the X-Cloupia-Request-Key field in requests. The issue results from the lack of proper validation of the user-supplied field prior to using it in authentication operations. An attacker can leverage this vulnerability to bypass authentication on the system.

*Credits: Steven Seeley (mr_me) of Source Incite

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-04-15 CVE Published
2020-04-15 First Exploit
2024-04-22 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-269: Improper Privilege Management

CAPEC

References (6)

URL	Tag	Source
http://packetstormsecurity.com/files/157955/Cisco-UCS-Director-Cloupia-Script-Remote-Code-Execution.html	X_refsource_misc
https://www.zerodayinitiative.com/advisories/ZDI-20-540	Third Party Advisory
https://srcincite.io/blog/2020/04/17/strike-three-symlinking-your-way-to-unauthenticated-access-against-cisco-ucs-director.html
https://srcincite.io/pocs/src-2020-0014.py.txt

URL	Date	SRC
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/cisco_ucs_cloupia_script_rce.rb	2020-04-15

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsd-mult-vulns-UNfpdW4E	2020-06-05

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.0.0.0 Search vendor "Cisco" for product "Ucs Director" and version "6.0.0.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.0.0.1 Search vendor "Cisco" for product "Ucs Director" and version "6.0.0.1"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.0.1.0 Search vendor "Cisco" for product "Ucs Director" and version "6.0.1.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.0.1.1 Search vendor "Cisco" for product "Ucs Director" and version "6.0.1.1"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.0.1.2 Search vendor "Cisco" for product "Ucs Director" and version "6.0.1.2"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.0.1.3 Search vendor "Cisco" for product "Ucs Director" and version "6.0.1.3"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.5.0.0 Search vendor "Cisco" for product "Ucs Director" and version "6.5.0.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.5.0.1 Search vendor "Cisco" for product "Ucs Director" and version "6.5.0.1"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.5.0.2 Search vendor "Cisco" for product "Ucs Director" and version "6.5.0.2"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.5.0.3 Search vendor "Cisco" for product "Ucs Director" and version "6.5.0.3"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.5.0.4 Search vendor "Cisco" for product "Ucs Director" and version "6.5.0.4"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.6.0.0 Search vendor "Cisco" for product "Ucs Director" and version "6.6.0.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.6.1.0 Search vendor "Cisco" for product "Ucs Director" and version "6.6.1.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.6.2.0 Search vendor "Cisco" for product "Ucs Director" and version "6.6.2.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.7.0.0 Search vendor "Cisco" for product "Ucs Director" and version "6.7.0.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.7.1.0 Search vendor "Cisco" for product "Ucs Director" and version "6.7.1.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.7.2.0 Search vendor "Cisco" for product "Ucs Director" and version "6.7.2.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Search vendor "Cisco" for product "Ucs Director"				6.7.3.0 Search vendor "Cisco" for product "Ucs Director" and version "6.7.3.0"		-		Affected
Cisco Search vendor "Cisco"		Ucs Director Express For Big Data Search vendor "Cisco" for product "Ucs Director Express For Big Data"				<= 3.7.3.0 Search vendor "Cisco" for product "Ucs Director Express For Big Data" and version " <= 3.7.3.0"		-		Affected