Multiple Ivanti Connect Secure Flaw Let Attackers Execute Remote Code

Four new vulnerabilities have been discovered in the Ivanti Connect Secure and Policy Secure Gateways. These vulnerabilities were associated with Heap overflow, null pointer dereference, and XML entity Expansion.

These vulnerabilities have been assigned with CVEs CVE-2024-21894, CVE-2024-22052, CVE-2024-22053, and CVE-2024-22023.

These vulnerabilities range in severity from 5.3 (Medium) to 8.2 (High). However, Ivanti has patched them and released a security advisory to address them appropriately. 

It is worth denoting that threat actors previously exploited Ivanti Connect Secure and Policy Secure vulnerabilities in the wild in February 2024.

Vulnerability Details

According to the security advisory, these vulnerabilities affect all supported versions of Ivanti Connect Secure and Policy Secure versions 9.x and 22.x.

Nevertheless, Ivanti also specified that there has been no evidence of these vulnerabilities being exploited by threat actors in the wild.

CVE-2024-21894 And CVE-2024-22053: Heap Overflow Vulnerability

These vulnerabilities exist in the Ivanti Connect Secure and Ivanti Policy Secure versions 9.x and 22.x, which could allow an unauthenticated threat actor to send specially crafted requests that could result in a DoS attack. 

These vulnerabilities can also be leveraged in certain cases to execute arbitrary code on the affected products. The severity of these vulnerabilities has been given as 8.2 (High). 

CVE-2024-22052: Null Pointer Dereference Vulnerability

A threat actor can exploit this vulnerability by sending specially crafted requests that could cause the service to crash, thereby performing a Denial-of-Service Attack on the vulnerable device.

The severity of this vulnerability has been given as 7.5 (High).

CVE-2024-22023: XML Entity Expansion Vulnerability

This vulnerability exists in the SAML component of Ivanti Connect Secure and Ivanti Policy Secure version 9.x and 22.x that could allow an unauthenticated threat actor to send a specially crafted request, which could result in causing resource exhaustion and subsequently a limited a Denial of Service attack.

The severity of this vulnerability is given as 5.3 (Medium).

Ivanti has stated that the patches for fixing these vulnerabilities are now available and can be downloaded from the download portal.

Additionally, customers of these Ivanti Products are recommended to immediately secure their products by applying appropriate patches.

Affected Products And Patched versions

Users of these products are recommended to upgrade to the latest versions to prevent threat actors from exploiting these vulnerabilities.

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