Bug#1059386: sendmail: CVE-2023-51765

[Salvatore Bonaccorso <carnil@debian.org>]

Source: sendmail
Version: 8.17.2-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for sendmail.

CVE-2023-51765[0]:
| sendmail through at least 8.14.7 allows SMTP smuggling in certain
| configurations. Remote attackers can use a published exploitation
| technique to inject e-mail messages that appear to originate from
| the sendmail server, allowing bypass of an SPF protection mechanism.
| This occurs because sendmail supports <LF>.<CR><LF> but some other
| popular e-mail servers do not.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-51765
    https://www.cve.org/CVERecord?id=CVE-2023-51765

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore