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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.150 (96.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.150 · newest: 0.150 · change: 0.000
Affected products
- Ivanti Avalanche — versions 6.3.2.3490
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zerodayinitiative.com/advisories/ZDI-22-776/ (VDB Entry, Third Party Advisory)
- download.wavelink.com/Files/avalanche_v6.3.4_release_notes.txt (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.