It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg package apport hooks, it could expose private data to other local users.
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ubuntu_linux | Canonical | 18.04 (including) | 18.04 (including) |
| Ubuntu_linux | Canonical | 20.04 (including) | 20.04 (including) |
| Ubuntu_linux | Canonical | 20.10 (including) | 20.10 (including) |
| Ubuntu_linux | Canonical | 21.04 (including) | 21.04 (including) |
| Ubuntu_linux | Canonical | 21.10 (including) | 21.10 (including) |
| Apport | Ubuntu | bionic | * |
| Apport | Ubuntu | devel | * |
| Apport | Ubuntu | esm-infra/xenial | * |
| Apport | Ubuntu | focal | * |
| Apport | Ubuntu | groovy | * |
| Apport | Ubuntu | hirsute | * |
| Apport | Ubuntu | impish | * |
| Apport | Ubuntu | jammy | * |
| Apport | Ubuntu | trusty | * |
| Apport | Ubuntu | trusty/esm | * |
| Apport | Ubuntu | xenial | * |