Advisory Details

August 15th, 2023

Ivanti Avalanche updateSkin Directory Traversal Remote Code Execution Vulnerability

ZDI-23-1118
ZDI-CAN-21081

CVE ID CVE-2023-32563
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 updateSkin method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. 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/New-Avalanche-Landing-Page?language=en_US
DISCLOSURE TIMELINE
  • 2023-05-30 - Vulnerability reported to vendor
  • 2023-08-15 - Coordinated public release of advisory
CREDIT 06fe5fd2bc53027c4a3b7e395af0b850e7b8a044
BACK TO ADVISORIES