CVE-2017-16943
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.5 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.527 Medium
EPSS
Percentile
97.6%
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.
| 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/1039872
bugs.exim.org/show_bug.cgi?id=2199
git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde
git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4
github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944
lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
www.debian.org/security/2017/dsa-4053
Social References
More
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.5 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.527 Medium
EPSS
Percentile
97.6%