CVE-2020-11582

HIGH

Pulse Secure Pulse Connect Secure < 2020-04-06 - Unauthenticated Resource Exposure via Host Checker Applet

Title source: llm
STIX 2.1

Description

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.)

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://git.lsd.cat/g/pulse-host-checker-rce

Scores

CVSS v3 8.8
EPSS 0.0084
EPSS Percentile 53.1%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-668
Status published
Products (2)
pulsesecure/pulse_connect_secure < 2020-04-06
pulsesecure/pulse_policy_secure
Published Apr 06, 2020
Tracked Since Feb 18, 2026