Liferay Portal Deserialization of Untrusted Data Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
• EPSS: 100% chance of exploitation in the next 30 days (higher than 100% of CVEs)
• Critical severity: CVSS 9.8

[ Description ]Official 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).

CISA: Liferay Portal contains a deserialization of untrusted data vulnerability that allows remote attackers to execute code via JSON web services.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 May 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• packetstormsecurity.com/files/157254/Liferay-Portal-Java-Unmarshalling-Remote-Code-Exec…Third Party AdvisoryVDB Entry
• packetstormsecurity.com/files/158392/Liferay-Portal-Remote-Code-Execution.htmlThird Party AdvisoryVDB Entry
• portal.liferay.dev/learn/security/known-vulnerabilitiesBroken LinkVendor Advisory
• portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/…Broken LinkVendor Advisory
• research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-…ExploitThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource