OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race conditions in the offline functionality in smtpd.c.
The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Opensmtpd | Opensmtpd | * | 6.6.4 (excluding) |
| Opensmtpd | Ubuntu | bionic | * |
| Opensmtpd | Ubuntu | devel | * |
| Opensmtpd | Ubuntu | eoan | * |
| Opensmtpd | Ubuntu | esm-apps/xenial | * |
| Opensmtpd | Ubuntu | esm-infra-legacy/trusty | * |
| Opensmtpd | Ubuntu | focal | * |
| Opensmtpd | Ubuntu | groovy | * |
| Opensmtpd | Ubuntu | hirsute | * |
| Opensmtpd | Ubuntu | impish | * |
| Opensmtpd | Ubuntu | jammy | * |
| Opensmtpd | Ubuntu | kinetic | * |
| Opensmtpd | Ubuntu | lunar | * |
| Opensmtpd | Ubuntu | mantic | * |
| Opensmtpd | Ubuntu | noble | * |
| Opensmtpd | Ubuntu | oracular | * |
| Opensmtpd | Ubuntu | trusty | * |
| Opensmtpd | Ubuntu | trusty/esm | * |
| Opensmtpd | Ubuntu | xenial | * |