Advisory Details

December 15th, 2023

Ivanti Avalanche Incorrect Default Permissions Local Privilege Escalation Vulnerability

ZDI-23-1799
ZDI-CAN-21231

CVE ID CVE-2023-41726
CVSS SCORE 7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Ivanti
AFFECTED PRODUCTS Avalanche
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Ivanti Avalanche. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the product installer. The issue results from incorrect permissions set on product folders created by the installer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

ADDITIONAL DETAILS Ivanti has issued an update to correct this vulnerability. More details can be found at:
https://download.wavelink.com/Files/avalanche_v6.4.1.236_release_notes.txt
DISCLOSURE TIMELINE
  • 2023-06-07 - Vulnerability reported to vendor
  • 2023-12-15 - Coordinated public release of advisory
CREDIT Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative
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