Zero-day vulnerability in Ivanti Connect Secure (formerly Pulse Connect Secure)

OS Command Injection
CVE-2024-21887

Vulnerability details

Advisory: SB2024011081 - Multiple vulnerabilities in Ivanti Connect Secure and Ivanti Policy Secure gateways

Vulnerable component: Ivanti Connect Secure (formerly Pulse Connect Secure)

CVE-ID: CVE-2024-21887

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Description:

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote authenticated administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system. However this vulnerability can be exploited by a non-authenticated attacker using authentication bypass vulnerability #VU85286 (CVE-2023-46805).

Note, the vulnerability is being actively exploited in the wild.



External links:

https://forums.ivanti.com/s/article/CVE-2023-46805-Authentication-Bypass-CVE-2024-21887-Command-Inje...

https://www.volexity.com/blog/2024/01/10/active-exploitation-of-two-zero-day-vulnerabilities-in-ivan...


About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.