FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

exim -- remote DoS attack in BDAT processing

Affected packages
4.88	<=	exim	<	4.89.1

Details

VuXML ID	75dd622c-d5fd-11e7-b9fe-c13eb7bcbf4f
Discovery	2017-11-23
Entry	2017-11-30

Exim developers team reports:

The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.

[source]

References

CVE Name	CVE-2017-16944
URL	https://bugs.exim.org/show_bug.cgi?id=2199