SMTP: Exim BDAT Denial of Service
A denial-of-service vulnerability has been reported in the Exim message transfer agent. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request. Successful exploitation could result in denial-of-service conditions.
Extended 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.
Affected Products
Debian debian_linux
References
CVE: CVE-2017-16944
Short Name
SMTP:DOS:SMTP-BDAT-DOS
Severity
Major
Recommended
True
Recommended Action
None
Category
SMTP
Keywords
BDAT CVE-2017-16944 Denial Exim Service of
Release Date
12/12/2017
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3590
False Positive
Unknown
Vendors
Exim
Debian
CVSS Score
5.0