CVE-2021-20289 Exposure of class information in RESTEasy

What is CVE-2021-20289?

CVE-2021-20289 is a medium-severity vulnerability in Netapp Oncommand Insight, published on 26 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in RESTEasy in all versions of RESTEasy up to 4.6.0.Final. The endpoint class and method names are returned as part of the exception response when RESTEasy cannot convert one of the request URI path or query values to the matching JAX-RS resource method's parameter value. The highest threat from this vulnerability is to data confidentiality.

Weakness: CWE-209

Which versions are affected by CVE-2021-20289?

6 open source packages ship an affected version, including org.jboss.resteasy:resteasy-core. It affects 4 products.

Products include Netapp Oncommand Insight, Oracle Communications Cloud Native Core Console, Quarkus Quarkus, Redhat Resteasy.

How do I fix CVE-2021-20289?

Upgrade org.jboss.resteasy:resteasy-core to a fixed version for your release line: 3.16.0, 4.5.10 or 4.6.1.

Is CVE-2021-20289 being exploited?

There is no known exploitation of CVE-2021-20289 in the wild and no public exploit code.

Other vulnerabilities in Netapp Oncommand Insight

• CVE-2017-5600 Hardcoded credentials in n/a Critical 9.8
• CVE-2018-1258 Spring Framework when used in combination with any versions of Spring Security contains an authorization bypass High 8.8
• CVE-2020-5421 RFD Protection Bypass via jsessionid High 8.7
• CVE-2022-38733 Auth bypass in OnCommand Insight High 8.6
• CVE-2023-22102 MySQL Connectors takeover vulnerability High 8.3

All Netapp Oncommand Insight vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-244r-fcj3-ghjq, OESA-2021-1171, UBUNTU-CVE-2021-20289.