RCE in Liferay Portal
CVE-2021-33990
Liferay Portal 6.2.5 allows Command=FileUpload&Type=File&CurrentFolder=/ requests when frmfolders.html exists. NOTE: The vendor disputes this issue because the exploit reference link only shows frmfolders.html is accessible and does not demonstrate how an unauthorized user can upload a file.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.119 (96.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.119 · newest: 0.119 · change: 0.000
Affected products
- Liferay Portal — versions 6.2.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/fu2x2000/Liferay_exploit_Poc (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/171701/Liferay-Portal-6.2.5-Insecure-Permissions… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33990?
- CVE-2021-33990 is a critical-severity vulnerability in Liferay Portal, classified under Improper Preservation of Permissions. CVSS score: 9.8/10. Published 2023-04-16.
- How severe is CVE-2021-33990?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-33990 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.