Ivanti Avalanche WLAvalancheService Integer Underflow Denial-of-Service Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Ivanti Avalanche. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the WLAvalancheService. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before reading from memory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.
Additional Details
Ivanti has issued an update to correct this vulnerability. More details can be found at:
https://forums.ivanti.com/s/article/Avalanche-6-4-2-Security-Hardening-and-CVEs-addressed?language=en_US
Disclosure Timeline
- 2023-11-16 - Vulnerability reported to vendor
- 2024-01-11 - Coordinated public release of advisory
- 2024-07-01 - Advisory Updated
Credit
Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative
