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CVE-2017-16944

Published: 27 November 2017

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.

Notes

AuthorNote
mdeslaur
only affects Exim 4.88 or newer

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
exim4
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Not vulnerable
(4.82-3ubuntu2.3)
xenial Not vulnerable
(4.86.2-2ubuntu2.2)
zesty
Released (4.88-5ubuntu1.3)
artful
Released (4.89-5ubuntu1.2)
Patches:
upstream: https://git.exim.org/exim.git/commit/178ecb70987f024f0e775d87c2f8b2cf587dd542
upstream: https://git.exim.org/exim.git/commit/4804c62909a62a3ac12ec4777ebd48c541028965 (4.89)