CVE-2017-16944
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.851 High
EPSS
Percentile
98.5%
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| exim:exim | exim | eq | 4.88 |
| exim:exim | exim | eq | 4.89 |
| debian:debian_linux | debian debian linux | eq | 9.0 |
References
openwall.com/lists/oss-security/2017/11/25/1
openwall.com/lists/oss-security/2017/11/25/2
openwall.com/lists/oss-security/2017/11/25/3
www.openwall.com/lists/oss-security/2021/05/04/7
www.securitytracker.com/id/1039873
bugs.exim.org/show_bug.cgi?id=2201
lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
www.debian.org/security/2017/dsa-4053
www.exploit-db.com/exploits/43184/
Social References
More
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.851 High
EPSS
Percentile
98.5%