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

Server-Side Request Forgery (SSRF)
CVE-2024-21893

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-2024-21893

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

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Description:

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the SAML component. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

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

External links:

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

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.