CVE-2020-11582

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, launches a TCP server that accepts local connections on a random port. This can be reached by local HTTP clients, because up to 25 invalid lines are ignored, and because DNS rebinding can occur. (This server accepts, for example, a setcookie command that might be relevant to CVE-2020-11581 exploitation.)

Se detectó un problema en Pulse Secure Pulse Connect Secure (PCS) hasta el 06-04-2020. El applet en el archivo tncc.jar, ejecutado en clientes macOS, Linux y Solaris cuando es aplicada una política Host Checker, inicia un servidor TCP que acepta conexiones locales en un puerto aleatorio. Esto puede ser alcanzado por los clientes HTTP locales, porque son ignoradas hasta 25 líneas no válidas y porque puede presentarse un re-enlace DNS. (Este servidor acepta, por ejemplo, un comando setcookie que podría ser relevante para la explotación del CVE-2020-11581).

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-04-06 CVE Reserved
2020-04-06 CVE Published
2023-08-10 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-668: Exposure of Resource to Wrong Sphere

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://git.lsd.cat/g/pulse-host-checker-rce	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426	2021-09-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Pulsesecure Search vendor "Pulsesecure"	Pulse Connect Secure Search vendor "Pulsesecure" for product "Pulse Connect Secure"	<= 2020-04-06 Search vendor "Pulsesecure" for product "Pulse Connect Secure" and version " <= 2020-04-06"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Pulsesecure Search vendor "Pulsesecure"	Pulse Connect Secure Search vendor "Pulsesecure" for product "Pulse Connect Secure"	<= 2020-04-06 Search vendor "Pulsesecure" for product "Pulse Connect Secure" and version " <= 2020-04-06"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe
Pulsesecure Search vendor "Pulsesecure"	Pulse Connect Secure Search vendor "Pulsesecure" for product "Pulse Connect Secure"	<= 2020-04-06 Search vendor "Pulsesecure" for product "Pulse Connect Secure" and version " <= 2020-04-06"	-	Affected	in	Oracle Search vendor "Oracle"	Solaris Search vendor "Oracle" for product "Solaris"	-	-	Safe
Pulsesecure Search vendor "Pulsesecure"		Pulse Policy Secure Search vendor "Pulsesecure" for product "Pulse Policy Secure"				-		-		Affected