CVE-2020-15839 Unrestricted Upload of File with Dangerous Type in Liferay Portal and Liferay DXP
Authenticated users can cause denial of service by uploading excessively large files due to missing size restrictions in Liferay Portal.
- 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-2020-15839?
CVE-2020-15839 is a medium-severity denial of service vulnerability in Liferay Digital Experience Platform, published on 22 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Liferay Portal before 7.3.3, and Liferay DXP 7.1 before fix pack 18 and 7.2 before fix pack 6, does not restrict the size of a multipart/form-data POST action, which allows remote authenticated users to conduct denial-of-service attacks by uploading large files.
Weakness: CWE-434
Which versions are affected by CVE-2020-15839?
5 open source packages ship an affected version, including com.liferay.portal:release.dxp.bom and liferay. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
com.liferay.portal:release.dxp.bom Maven | All versions | 7.1.10.fp18 |
com.liferay.portal:release.dxp.bom Maven | All versions | 7.1.10.fp18 |
com.liferay.portal:release.dxp.bom Maven | From 7.2.1 | 7.2.10.fp6 |
com.liferay.portal:release.dxp.bom Maven | From 7.2.1 | 7.2.10.fp6 |
liferay Bitnami | From 7.1.0 to 7.1.0 | None |
Products include Liferay Digital Experience Platform, Liferay Liferay Portal.
How do I fix CVE-2020-15839?
Upgrade com.liferay.portal:release.dxp.bom to a fixed version for your release line: 7.1.10.fp18 or 7.2.10.fp6.
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-2020-15839 being exploited?
There is no known exploitation of CVE-2020-15839 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 BIT-liferay-2020-15839, GHSA-c7f6-4vx5-4263.