What is CVE-2022-36971?

CVE-2022-36971 is a high-severity vulnerability in Ivanti Avalanche, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2023-03-29.

How severe is CVE-2022-36971?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2022-36971 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Ivanti Avalanche

CVE-2022-36971

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.

Vulnerability class: Insecure Deserialization

EPSS: 0.150 (96.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ivanti Avalanche — versions 6.3.2.3490

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory)
zdi-disclosures@trendmicro.com (Release Notes)

Frequently asked questions

What is CVE-2022-36971?: CVE-2022-36971 is a high-severity vulnerability in Ivanti Avalanche, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2023-03-29.
How severe is CVE-2022-36971?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-36971 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.