CVE-2017-16944 Information
Share on: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.
CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Reference
http://openwall.com/lists/oss-security/2017/11/25/1 http://openwall.com/lists/oss-security/2017/11/25/2 http://openwall.com/lists/oss-security/2017/11/25/3 http://www.securitytracker.com/id/1039873 https://bugs.exim.org/show_bug.cgi?id=2201 https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html https://www.debian.org/security/2017/dsa-4053 https://www.exploit-db.com/exploits/43184/
Attack Complexity
LOW
Privileges Required
NONE
User Interaction Required
NONE
Scope
NONE
Confidentiality Impact
UNCHANGED
Integrity Impact
NONE
Availability Impact
NONE
Base Score
HIGH
Base Severity
7.5