Exploited vulnerability · CISA KEV

Is CVE-2024-21893 exploited? Yes: in CISA KEV since 31 Jan 2024

Gociux · Ivanti Connect Secure, Policy Secure, and Neurons · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2024-21893, Ivanti Connect Secure, Policy Secure, and Neurons Server-Side Request Forgery (SSRF) Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 31 Jan 2024, the day it was published. It is known to be used in ransomware campaigns. It affects Ivanti Connect Secure, Policy Secure, and Neurons, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What it is

Ivanti Connect Secure (ICS, formerly known as Pulse Connect Secure), Ivanti Policy Secure, and Ivanti Neurons contain a server-side request forgery (SSRF) vulnerability in the SAML component that allows an attacker to access certain restricted resources without authentication.

What to do

1. Check whether you run it. Look for Connect Secure, Policy Secure, and Neurons in your asset inventory, including appliances and cloud images. Stack check lists every exploited Ivanti CVE at once.
2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 31 Jan 2024.
4. Get told next time. Email alerts when CISA adds a CVE for Ivanti.

References

• forums.ivanti.com/s/article/KB-CVE-2023-46805-Authentication-Bypass-CVE-2024-
• nvd.nist.gov/vuln/detail/CVE-2024-21893

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in January 2024 · Ivanti scorecard · act-now radar.