CVE-2017-16943

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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://openwall.com/lists/oss-security/2017/11/25/1	Mailing List
http://openwall.com/lists/oss-security/2017/11/25/2	Mailing List
http://openwall.com/lists/oss-security/2017/11/25/3	Mailing List
http://www.openwall.com/lists/oss-security/2021/05/04/7
http://www.securitytracker.com/id/1039872	Third Party Advisory VDB Entry
https://bugs.exim.org/show_bug.cgi?id=2199	Exploit Issue Tracking
https://git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde	Patch
https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4	Patch
https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944	Exploit
https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html	Mailing List
https://www.debian.org/security/2017/dsa-4053	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:exim:exim:4.88:-::::::
	cpe:2.3:a:exim:exim:4.89:-::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

History

04 May 2021, 18:15

Type	Values Removed	Values Added
References		(MLIST) http://www.openwall.com/lists/oss-security/2021/05/04/7 -

Information

Published : 2017-11-25 17:29

Updated : 2023-12-10 12:15

NVD link : CVE-2017-16943

Mitre link : CVE-2017-16943

CVE.ORG link : CVE-2017-16943

JSON object : View

Products Affected

debian

debian_linux

exim

exim

CWE

CWE-416

Use After Free

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