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CVE-2022-36981: ZDI-22-786

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ivanti Avalanche 6.3.3.101. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the DeviceLogResource class. 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 the service account. Was ZDI-CAN-15966.

CVE
#vulnerability#rce#auth

May 26th, 2022

Ivanti Avalanche DeviceLogResource Directory Traversal Remote Code Execution Vulnerability****ZDI-22-786
ZDI-CAN-15966

CVE ID

CVE-2022-36981

CVSS SCORE

8.8, (AV:N/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 remote attackers to execute arbitrary code on affected installations of Ivanti Avalanche. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the DeviceLogResource class. 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 the service account.

ADDITIONAL DETAILS

Ivanti has issued an update to correct this vulnerability. More details can be found at:
https://download.wavelink.com/Files/avalanche_v6.3.4_release_notes.txt

DISCLOSURE TIMELINE

  • 2021-12-08 - Vulnerability reported to vendor
  • 2022-05-26 - Coordinated public release of advisory
  • 2022-07-27 - Advisory Updated

CREDIT

Piotr Bazydlo (@chudypb)

BACK TO ADVISORIES

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