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 <LF>.<CR><LF> but some other popular e-mail servers do not.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-3708-1 exim4 security update
Debian DSA Debian DSA DSA-5597-1 exim4 security update
Ubuntu USN Ubuntu USN USN-6611-1 Exim vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-02T22:48:11.092Z

Reserved: 2023-12-24T00:00:00

Link: CVE-2023-51766

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-12-24T06:15:07.673

Modified: 2024-11-21T08:38:45.183

Link: CVE-2023-51766

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.