VIR Vulnerability Intelligence Relay

CVE-2020-7961

unknown KEV
Published 2022-05-24 · Modified 2021-11-03
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
—
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H
CVSS v4 NEW
—
not yet in upstream
VIR risk
2.5

Description

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

CISA KEV

Vendor
Liferay
Product
Liferay Portal
Due date
2022-05-03

Predictions

Exploit likelihood
99%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-48332 remote java verified
Metasploit · 2020-04-16

Liferay Portal - Java Unmarshalling via JSONWS RCE (Metasploit)

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_multi/http/liferay_java_unmarshalling rank 600
Liferay Portal Java Unmarshalling via JSONWS RCE
Source fetch failed: fetch_error — view the original via the link above.

Package impact
EcosystemPackageVulnerableFixed
java Mavencom.liferay.portal:com.liferay.portal.kernel<4.35.34.35.3

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.