Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports . but some other popular e-mail servers do not.
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Exim | Exim | * | 4.97.1 (excluding) |
Exim4 | Ubuntu | bionic | * |
Exim4 | Ubuntu | devel | * |
Exim4 | Ubuntu | esm-infra/bionic | * |
Exim4 | Ubuntu | esm-infra/xenial | * |
Exim4 | Ubuntu | focal | * |
Exim4 | Ubuntu | jammy | * |
Exim4 | Ubuntu | lunar | * |
Exim4 | Ubuntu | mantic | * |
Exim4 | Ubuntu | noble | * |
Exim4 | Ubuntu | oracular | * |
Exim4 | Ubuntu | trusty | * |
Exim4 | Ubuntu | trusty/esm | * |
Exim4 | Ubuntu | upstream | * |
Exim4 | Ubuntu | xenial | * |