CVE-2022-46149 Information

Description

Cap’n Proto is a data interchange format and remote procedure call (RPC) system. Cap’n Proro prior to versions 0.7.1 0.8.1 0.9.2 and 0.10.3 as well as versions of Cap’n Proto’s Rust implementation prior to 0.13.7 0.14.11 and 0.15.2 are vulnerable to out-of-bounds read due to logic error handling list-of-list. This issue may lead someone to remotely segfault a peer by sending it a malicious message if the victim performs certain actions on a list-of-pointer type. Exfiltration of memory is possible if the victim performs additional certain actions on a list-of-pointer type. To be vulnerable an application must perform a specific sequence of actions described in the GitHub Security Advisory. The bug is present in inlined code therefore the fix will require rebuilding dependent applications. Cap’n Proto has C++ fixes available in versions 0.7.1 0.8.1 0.9.2 and 0.10.3. The capnp Rust crate has fixes available in versions 0.13.7 0.14.11 and 0.15.2.

Reference

https://github.com/capnproto/capnproto/commit/25d34c67863fd960af34fc4f82a7ca3362ee74b9 https://github.com/capnproto/capnproto/security/advisories/GHSA-qqff-4vw4-f6hx