CVE-2018-6320 Other in n/a
Attackers can bypass security controls by sending unvalidated Host headers to Pulse Secure PCS and PPS login interfaces.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-6320?
CVE-2018-6320 is a critical vulnerability in Ivanti Connect Secure, published on 6 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been discovered in login.cgi in Pulse Secure Pulse Connect Secure (PCS) 8.1RX before 8.1R12 and 8.3RX before 8.3R2 and Pulse Policy Secure (PPS) 5.2RX before 5.2R9 and 5.4RX before 5.4R2 wherein an http(s) Host header received from the browser is trusted without validation.
Weakness: CWE-20
Which versions are affected by CVE-2018-6320?
It affects 3 products.
Products include Ivanti Connect Secure, Pulsesecure Pulse Connect Secure, Pulsesecure Pulse Policy Secure.
How do I fix CVE-2018-6320?
No fix has been published for CVE-2018-6320 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-6320 being exploited?
There is no known exploitation of CVE-2018-6320 in the wild and no public exploit code.
Other vulnerabilities in Ivanti Connect Secure
- CVE-2021-22893 Ivanti Pulse Connect Secure Use-After-Free
- CVE-2019-11510 Ivanti Pulse Connect Secure Arbitrary File Read
- CVE-2024-21887 Ivanti Connect Secure and Policy Secure Command Injection
- CVE-2025-22457 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow
- CVE-2025-0282 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow
Sources
Also known as GHSA-86rc-v7r8-8fwp.