GHSA-7c5v-895v-w4q5 jooby-pac4j: deserialization of untrusted data

• Maven io.jooby:jooby-pac4j: < 2.17.0 → fixed in 2.17.0 • Maven io.jooby:jooby-pac4j: >= 3.0.0.M1, < 3.7.0 → fixed in 3.7.0

Impact Versions after 2.x and before 3.x of io.jooby:jooby-pac4j can cause deserialization of untrusted data Patches • 2.17.0 (2.x) • 3.7.0 (3.x) Workarounds • Not using io.jooby:jooby-pac4j until it gets patches. • Check what values you put/save on session References Version 2.x: https://github.com/jooby-project/jooby/blob/v2.x/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L39-L45 Version 3.x: https://github.com/jooby-project/jooby/blob/v3.6.1/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L77-L84 Cause In module pac4j io.jooby.internal.pac4j.SessionStoreImpl#get , it is used to handle sessions , and trying to get key value. In strToObject function ,it's trying to deserialize value when value starts with "b64~" , which might cause deserialization of untrusted data. modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java Here's a small demo using SessionStoreImpl#get to handle sessions ,and user can pass parameters. And following below is exploiting successfully(execute calculator)