CVE-2019-16891 — Liferay Portal CE 6

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

01What is this vulnerability?

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

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-10-04T00:00:00.000Z
• Last modified: 2024-08-05T01:24:48.622Z

09References

• www.liferay.com — https://www.liferay.com/downloads-community
• www.youtube.com — https://www.youtube.com/watch?v=DjMEfQW3bf0
• sec.vnpt.vn — https://sec.vnpt.vn/2019/09/liferay-deserialization-json-deserialization-part-4/
• dappsec.substack.com — https://dappsec.substack.com/p/an-advisory-for-cve-2019-16891-from