CVE-2023-51765

Updated: 2024-11-30 03:16:48.07972

Description:

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x MEDIUM 5.3

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

AlmaLinux 9.2 ESU sendmail 8.16.1 5.3 MEDIUM Ignored 2025-03-06 22:03:57
CentOS 7 ELS sendmail 8.14.7 5.3 MEDIUM Ignored 2024-05-10 10:14:41