CVE-2024-21894

CRITICAL

Published Apr 4, 2024 Modified Nov 21, 2024 CWE-787 CWE-703

Description

A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows an unauthenticated malicious user to send specially crafted requests in-order-to crash the service thereby causing a DoS attack. In certain conditions this may lead to execution of arbitrary code

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

CWE-703 CWE-703

Affected Products

Vendor	Product	Versions
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All

References

Advisories & Patches

https://forums.ivanti.com/s/article/SA-CVE-2024-21894-Heap-Overflow-CVE-2024-22052-Null-Pointer-Dereference-CVE-2024-22053-Heap-Overflow-and-CVE-2024-22023-XML-entity-expansion-or-XXE-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US https://forums.ivanti.com/s/article/SA-CVE-2024-21894-Heap-Overflow-CVE-2024-22052-Null-Pointer-Dereference-CVE-2024-22053-Heap-Overflow-and-CVE-2024-22023-XML-entity-expansion-or-XXE-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US

Frequently Asked Questions

What is CVE-2024-21894? +

How severe is CVE-2024-21894? +

CVE-2024-21894 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-21894? +

CVE-2024-21894 affects products from ivanti, specifically: connect_secure, policy_secure. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21894? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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