VulnerabilityAnalyzed
CVE-2020-7961
Liferay Portal Deserialization of Untrusted Data Vulnerability
KEVCRITICAL 9.8EPSS 99.9%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Deserialization of Untrusted Data in Liferay Portal prior to 7.2.1 CE GA2 allows remote attackers to execute arbitrary code via JSON web services (JSONWS).
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.91% probability · 100th percentile
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022
- Weakness
- CWE-502
- Affected
- liferay/liferay portal
- Source
- cve@mitre.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2020-7961
References
- http://packetstormsecurity.com/files/157254/Liferay-Portal-Java-Unmarshalling-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158392/Liferay-Portal-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://portal.liferay.dev/learn/security/known-vulnerabilitiesBroken Link, Vendor Advisory
- https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/117954271Broken Link, Vendor Advisory
- https://research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-botnet/Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/157254/Liferay-Portal-Java-Unmarshalling-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158392/Liferay-Portal-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://portal.liferay.dev/learn/security/known-vulnerabilitiesBroken Link, Vendor Advisory
- https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/117954271Broken Link, Vendor Advisory
- https://research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-botnet/Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-7961US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.