Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of service by crashing the application with a RecursionError. We recommend upgrading to version =>6.31.1 or beyond commit 17838beda2943d08b8a9d4df5b68f5f04f26d901
Weakness
The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Protobuf-python | * | 4.25.8 (excluding) | |
| Protobuf-python | 5.26.0 (including) | 5.29.5 (excluding) | |
| Protobuf-python | 6.30.0 (including) | 6.31.1 (excluding) | |
| Red Hat Ansible Automation Platform 2.6 for RHEL 9 | RedHat | python3.11-protobuf-0:4.25.8-1.el9ap | * |
| Red Hat OpenShift Container Platform 4.19 | RedHat | openshift4/ose-dpu-intel-ipu-vsp-rhel9:v4.19.0-202507081507.p0.gb4d5e23.assembly.stream.el9 | * |
| Protobuf | Ubuntu | devel | * |
| Protobuf | Ubuntu | esm-infra-legacy/trusty | * |
| Protobuf | Ubuntu | esm-infra/bionic | * |
| Protobuf | Ubuntu | esm-infra/focal | * |
| Protobuf | Ubuntu | esm-infra/xenial | * |
| Protobuf | Ubuntu | jammy | * |
| Protobuf | Ubuntu | noble | * |
| Protobuf | Ubuntu | oracular | * |
| Protobuf | Ubuntu | plucky | * |
| Protobuf | Ubuntu | upstream | * |