Advisory Details

January 11th, 2024

Ivanti Avalanche WLAvalancheService Stack-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2023-46220
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Ivanti
AFFECTED PRODUCTS	Avalanche
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code 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 the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of 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	2023-11-09 - 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

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