Headline

CVE-2022-36971: ZDI-22-776

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ivanti Avalanche 6.3.2.3490. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the JwtTokenUtility class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-15301.

1 year ago

CVE

Open in Source

#vulnerability #rce #auth

May 26th, 2022

Ivanti Avalanche JwtTokenUtility Deserialization of Untrusted Data Remote Code Execution Vulnerability****ZDI-22-776
ZDI-CAN-15301

CVE ID

CVE-2022-36971

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. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the JwtTokenUtility class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. 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

2021-10-22 - Vulnerability reported to vendor
2022-05-26 - Coordinated public release of advisory
2022-07-27 - Advisory Updated

CREDIT

Piotr Bazydlo (@chudypb)

BACK TO ADVISORIES

SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with Orion admin-level account access to SolarWinds Web Console to execute arbitrary commands.