CVE-2023-51765

sendmail through 8.17.2 allows SMTP smuggling in certain 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 sendmail supports <LF>.<CR><LF> but some other popular e-mail servers do not. This is resolved in 8.18 and later versions with 'o' in srv_features.

sendmail through 8.17.2 allows SMTP smuggling in certain 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 sendmail supports <LF>.<CR><LF> but some other popular e-mail servers do not. This is resolved in 8.18 and later versions with 'o' in srv_features.

sendmail hasta al menos 8.14.7 permite el contrabando SMTP en ciertas configuraciones. Los atacantes remotos pueden utilizar una técnica de explotación publicada para inyectar mensajes de correo electrónico que parecen originarse en el servidor sendmail, lo que permite omitir un mecanismo de protección SPF. Esto ocurre porque sendmail admite . pero algunos otros servidores de correo electrónico populares no lo hacen.