National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-16943 Detail

Current Description

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.

Source:  MITRE
Description Last Modified:  11/25/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.8 CRITICAL
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink 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.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

Technical Details

Vulnerability Type (View All)

Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-16943
NVD Published Date:
11/25/2017
NVD Last Modified:
12/07/2017