CVE-2021-33320 Liferay Portal and Liferay DXP vulnerable to email spam via lack of flagging rate
Authenticated users can spam site administrators with emails by exploiting a lack of rate limiting in the Flags module, causing resource exhaustion.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-33320?
CVE-2021-33320 is a medium-severity denial of service vulnerability in Liferay Digital Experience Platform, published on 3 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Flags module in Liferay Portal 7.3.1 and earlier, and Liferay DXP 7.0 before fix pack 96, 7.1 before fix pack 20, and 7.2 before fix pack 5, does not limit the rate at which content can be flagged as inappropriate, which allows remote authenticated users to spam the site administrator with emails
Weakness: CWE-770
Which versions are affected by CVE-2021-33320?
8 open source packages ship an affected version, including com.liferay.portal:release.dxp.bom and com.liferay:com.liferay.flags.taglib. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
com.liferay.portal:release.dxp.bom Maven | From 7.0.0 | 7.0.10.fp96 |
com.liferay.portal:release.dxp.bom Maven | From 7.0.0 | 7.0.10.fp96 |
com.liferay.portal:release.dxp.bom Maven | From 7.1.0 | 7.1.10.fp20 |
com.liferay.portal:release.dxp.bom Maven | From 7.1.0 | 7.1.10.fp20 |
com.liferay.portal:release.dxp.bom Maven | From 7.2.0 | 7.2.10.fp5 |
com.liferay.portal:release.dxp.bom Maven | From 7.2.0 | 7.2.10.fp5 |
2 more packages
com.liferay:com.liferay.flags.taglib Maven | All versions | 5.0.11 |
com.liferay:com.liferay.flags.taglib Maven | All versions | 5.0.11 |
Products include Liferay Digital Experience Platform, Liferay Liferay Portal.
How do I fix CVE-2021-33320?
Upgrade com.liferay.portal:release.dxp.bom to a fixed version for your release line: 7.0.10.fp96, 7.1.10.fp20 or 7.2.10.fp5.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-33320 being exploited?
There is no known exploitation of CVE-2021-33320 in the wild and no public exploit code.
Other vulnerabilities in Liferay Digital Experience Platform
- CVE-2024-8980 Liferay Portal and Liferay DXP Vulnerable to CSRF in the Script Console
- CVE-2023-42496 Liferay Portal and Liferay DXP vulnerable to reflected Cross-site Scripting
- CVE-2023-42498 Liferay Portal Language Override edit screen and Liferay DXP vulnerable to reflected Cross-site Scripting
- CVE-2024-25147 Liferay Portal and Liferay DXP vulnerable to Cross-site Scripting
- CVE-2024-26269 Liferay Portal Frontend JS module's portlet.js and Liferay DXP vulnerable to Cross-site Scripting
Sources
Also known as GHSA-wg4x-hf94-fj5v.