CVE-2021-2142 Cross-site scripting in WebLogic Server

Medium 6.1 Published 22 Apr 2021 Updated 26 Sep 2024

Unauthenticated attackers can exploit a cross-site scripting flaw in the WebLogic Console to read and modify accessible data.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-2142?

CVE-2021-2142 is a medium-severity cross-site scripting vulnerability in Oracle Weblogic Server, published on 22 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Console). The supported version that is affected is 10.3.6.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle WebLogic Server, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle WebLogic Server accessible data as well as unauthorized read access to a subset of Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Which versions are affected by CVE-2021-2142?

It affects 1 product.

Products include Oracle Weblogic Server.

How do I fix CVE-2021-2142?

No fix has been published for CVE-2021-2142 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-2142 being exploited?

There is no known exploitation of CVE-2021-2142 in the wild and no public exploit code.

All Oracle Weblogic Server vulnerabilities

Sources

Also known as GHSA-xc3f-4237-2h7m.