CRLF injection in Ivanti Connect Secure (formerly Pulse Connect Secure) and Ivanti Policy Secure (formerly Pulse Policy Secure) - CVE-2023-38551
Published: May 22, 2024
Vulnerability identifier: #VU89721
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-38551
CWE-ID: CWE-93
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data. A remote privileged user can pass specially crafted data to the application containing CR-LF characters and modify application behavior, leading to cross-site scripting attacks.
Affected software
Ivanti Connect Secure (formerly Pulse Connect Secure)
Ivanti Policy Secure (formerly Pulse Policy Secure)
Ivanti Policy Secure (formerly Pulse Policy Secure)
How to mitigate CVE-2023-38551
Install updates from vendor's website.
Ivanti Connect Secure (formerly Pulse Connect Secure) - addressed in versions 9.1R18.6, 22.5R2.4, 22.7R2
Ivanti Policy Secure (formerly Pulse Policy Secure) - update to 22.7R1
Ivanti Policy Secure (formerly Pulse Policy Secure) - update to 22.7R1