A flaw was found in undertow. Servlets annotated with @MultipartConfig may cause an OutOfMemoryError due to large multipart content. This may allow unauthorized users to cause remote Denial of Service (DoS) attack. If the server uses fileSizeThreshold to limit the file size, its possible to bypass the limit by setting the file name in the request to null.
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Undertow | Redhat | * | 2.2.24 (excluding) |
| Red Hat Fuse 7.12.1 | RedHat | undertow | * |
| Red Hat Fuse 7.13.0 | RedHat | undertow | * |
| Red Hat JBoss Enterprise Application Platform 7 | RedHat | undertow | * |
| Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 | RedHat | eap7-undertow-0:2.2.25-3.SP3_redhat_00001.1.el8eap | * |
| Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 | RedHat | eap7-undertow-0:2.2.25-3.SP3_redhat_00001.1.el9eap | * |
| Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 | RedHat | eap7-undertow-0:2.2.25-3.SP3_redhat_00001.1.el7eap | * |
| Red Hat Single Sign-On 7.6.5 | RedHat | undertow | * |
| Red Hat Single Sign-On 7.6 for RHEL 7 | RedHat | rh-sso7-keycloak-0:18.0.9-1.redhat_00001.1.el7sso | * |
| Red Hat Single Sign-On 7.6 for RHEL 8 | RedHat | rh-sso7-keycloak-0:18.0.9-1.redhat_00001.1.el8sso | * |
| Red Hat Single Sign-On 7.6 for RHEL 9 | RedHat | rh-sso7-keycloak-0:18.0.9-1.redhat_00001.1.el9sso | * |
| RHEL-8 based Middleware Containers | RedHat | rh-sso-7/sso76-openshift-rhel8:7.6-27 | * |
| Undertow | Ubuntu | bionic | * |
| Undertow | Ubuntu | trusty | * |
| Undertow | Ubuntu | xenial | * |