CVE-2017-16944

HIGH 7.5CVE-2017-16944 · Published 25/11/2017 · updated 17/06/2026

Package	Affected versions	Patched versions
exim exim	`= 4.88= 4.89`	No fix yet

Description

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.

References

openwall.com/lists/oss-security/2017/11/25/1 · Mailing List
openwall.com/lists/oss-security/2017/11/25/2 · Mailing List
openwall.com/lists/oss-security/2017/11/25/3 · Mailing List
openwall.com/lists/oss-security/2021/05/04/7
securitytracker.com/id/1039873 · Third Party Advisory
bugs.exim.org/show_bug.cgi · Exploit
lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html · Mailing List
debian.org/security/2017/dsa-4053 · Third Party Advisory
exploit-db.com/exploits/43184 · Third Party Advisory

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