CVE-2022-35254: ivanti connect_secure Use After Free

Vulnerability summary

CVE-2022-35254 is a high (CVSS 7.5) Use After Free vulnerability in ivanti connect_secure. EPSS estimates a 2.68% chance of exploitation in the next 30 days, higher than 85.6% of scored vulnerabilities.

Timeline

1. 05-12-2022
   PublishedVulnerability first disclosed.
2. 24-04-2025
   Last modifiedVulnerability information updated.

Description

An unauthenticated attacker can cause a denial-of-service to the following products: Ivanti Connect Secure (ICS) in versions prior to 9.1R14.3, 9.1R15.2, 9.1R16.2, and 22.2R4, Ivanti Policy Secure (IPS) in versions prior to 9.1R17 and 22.3R1, and Ivanti Neurons for Zero-Trust Access in versions prior to 22.3R1.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
• CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.