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CVE-2022-42124

HIGH

CVE-2022-42124 is a high-severity (CVSS 7.5) CWE-1333 vulnerability in liferay digital experience platform. O3 Security detects and blocks CVE-2022-42124 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

ReDoS vulnerability in LayoutPageTemplateEntryUpgradeProcess in Liferay Portal 7.3.2 through 7.4.3.4 and Liferay DXP 7.2 fix pack 9 through fix pack 18, 7.3 before update 4, and DXP…

Published
Nov 15, 2022
Updated
Jul 9, 2026
Affected
2 products
Patched
See advisory
Exploits
None indexed

Description

ReDoS vulnerability in LayoutPageTemplateEntryUpgradeProcess in Liferay Portal 7.3.2 through 7.4.3.4 and Liferay DXP 7.2 fix pack 9 through fix pack 18, 7.3 before update 4, and DXP 7.4 GA allows remote attackers to consume an excessive amount of server resources via a crafted payload injected into the 'name' field of a layout prototype.

Affected Products

2 products · 11 configurations
Application
digital experience platformliferay
3 versions
7.27.37.4
Application
liferay portalliferay
≥ 7.3.2 && < 7.4.3.5
range

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every liferay digital experience platform deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Fix

    Apply the liferay digital experience platform security patch or hotfix for CVE-2022-42124 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2022-42124 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2022-42124. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

ReDoS vulnerability in LayoutPageTemplateEntryUpgradeProcess in Liferay Portal 7.3.2 through 7.4.3.4 and Liferay DXP 7.2 fix pack 9 through fix pack 18, 7.3 before update 4, and DXP 7.4 GA allows remote attackers to consume an excessive amount of server resources via a crafted payload injected into the 'name' field of a layout prototype.
O3 Security · Runtime Protection

Is CVE-2022-42124 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2022-42124 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.