Known exploited vulnerability
CVE-2024-21887
The short answer
CVE-2024-21887 affects Ivanti ICS and is rated critical (CVSS 9.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2024-01-10: attackers are using it, so patch it first.
What it is
A command injection vulnerability in web components of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) allows an authenticated administrator to send specially crafted requests and execute arbitrary commands on the appliance.
Weakness: CWE-77.
Severity
9.1 critical
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Jan 10, 2024
Federal due date Jan 22, 2024
EPSS, next 30 days
100%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected products
ICS, IPS. NVD's record lists the exact affected versions.
References
- forums.ivanti.com/s/article/CVE-2023-46805-Authentication-Bypass-CVE-2024-21887-Command-Injection-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US Vendor Advisory
- forums.ivanti.com/s/article/CVE-2023-46805-Authentication-Bypass-CVE-2024-21887-Command-Injection-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21887 US Government Resource
Questions
Is CVE-2024-21887 being exploited?
Yes. CISA added CVE-2024-21887 to its Known Exploited Vulnerabilities catalog on 2024-01-10, with a federal remediation due date of 2024-01-22. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2024-21887?
CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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