CVE-2019-16891 Liferay Portal Allows RCE via Deserialization of a JSON Payload

What is CVE-2019-16891?

CVE-2019-16891 is a critical unsafe deserialization vulnerability in Liferay Liferay Portal, published on 4 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Liferay Portal CE 6.2.5 allows remote command execution because of deserialization of a JSON payload.

Weakness: CWE-502

Which versions are affected by CVE-2019-16891?

2 open source packages ship an affected version, including com.liferay.portal:release.portal.bom. It affects 1 product.

Products include Liferay Liferay Portal.

How do I fix CVE-2019-16891?

Upgrade com.liferay.portal:release.portal.bom to 7.1.1 or later.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2019-16891 being exploited?

There is no known exploitation of CVE-2019-16891 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Liferay Liferay Portal

• CVE-2020-7961 Liferay Portal Deserialization of Untrusted Data Exploited Critical 9.8
• CVE-2021-33990 File upload in n/a Critical 9.8
• CVE-2023-47797 Liferay Portal XSS with `p_l_back_url_title` on edit content page Critical 9.6
• CVE-2020-13445 Liferay Portal and Liferay DXP Vulnerable to Arbitrary Code Execution High 8.8
• CVE-2018-10795 File upload in n/a High 8.8

All Liferay Liferay Portal vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as CVE-2022-44147, GHSA-372h-p48h-xw8q.