CVE-2018-20809 — HIGH (7.5)

Vulnerability Description

A crafted message can cause the web server to crash with Pulse Secure Pulse Connect Secure (PCS) 8.3RX before 8.3R5 and Pulse Policy Secure 5.4RX before 5.4R5. This is not applicable to PCS 8.1RX.

CVSS Score

7.5

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ivanti	Connect Secure	8.3
Pulsesecure	Pulse Policy Secure	4.4

Related Weaknesses (CWE)

CWE-20

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43877/Vendor Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43877/Vendor Advisory

FAQ

What is CVE-2018-20809?

CVE-2018-20809 is a vulnerability with a CVSS score of 7.5 (HIGH). A crafted message can cause the web server to crash with Pulse Secure Pulse Connect Secure (PCS) 8.3RX before 8.3R5 and Pulse Policy Secure 5.4RX before 5.4R5. This is not applicable to PCS 8.1RX.

How severe is CVE-2018-20809?

CVE-2018-20809 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-20809?

Check the references section above for vendor advisories and patch information. Affected products include: Ivanti Connect Secure, Pulsesecure Pulse Policy Secure.