Actively exploited · Published Mar 20, 2020 · Assigned by mitre
CVE-2020-7961
Critical 9.8 Exploited
In plain English
A critical-severity unsafe deserialization in Liferay Portal from Liferay. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). The chance it is exploited in the next 30 days is estimated at 99.9% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code. Fixed versions are available - upgrade the affected package.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by May 3, 2022.
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).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | com.liferay.portal:com.liferay.portal.kernel | 4.35.3 | GHSA-w7pm-cc4v-f3g8 |
Affected products (as reported)
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://portal.liferay.dev/learn/security/known-vulnerabilities x_refsource_MISC
- https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/117954271 x_refsource_CONFIRM
- http://packetstormsecurity.com/files/157254/Liferay-Portal-Java-Unmarshalling-Remote-Code-Execution.html x_refsource_MISC
- http://packetstormsecurity.com/files/158392/Liferay-Portal-Remote-Code-Execution.html x_refsource_MISC
- https://research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-botnet/ x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-7961 government-resource