|Description||Spring Framework, versions 5.0 prior to 5.0.5 and versions 4.3 prior to 4.3.15 and older unsupported versions, provide client-side support for multipart requests. When Spring MVC or Spring WebFlux server application (server A) receives input from a remote client, and then uses that input to make a multipart request to another server (server B), it can be exposed to an attack, where an extra multipart is inserted in the content of the request from server A, causing server B to use the wrong value for a part it expects. This could to lead privilege escalation, for example, if the part content represents a username or user roles.|
|Source||CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)|
|NVD severity||medium (attack range: remote)|
Vulnerable and fixed packages
The table below lists information on source packages.
|bullseye, sid, buster||4.3.22-4||fixed|
The information below is based on the following data on fixed versions.
[stretch] - libspring-java <no-dsa> (Minor issue)
[jessie] - libspring-java <not-affected> (vulnerable code not found)
[wheezy] - libspring-java <not-affected> (Vulnerable broker code introduced in various commits re. https://github.com/spring-projects/spring-framework/blame/0009806debb578e884f6dc98bd1f2dc668020021/spring-messaging/src/main/java/org/springframework/messaging/simp/broker/DefaultSubscriptionRegistry.java)