Executive Summary

Informations
Name CVE-2017-16943 First vendor Publication 2017-11-25
Vendor Cve Last vendor Modification 2019-08-02

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16943

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 2
Os 1

Snort® IPS/IDS

Date Description
2019-09-26 Exim malformed BDAT code execution attempt
RuleID : 51301 - Revision : 1 - Type : SERVER-OTHER
2018-01-03 Exim malformed BDAT code execution attempt
RuleID : 45046 - Revision : 5 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date Description
2018-03-07 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201803-01.nasl - Type : ACT_GATHER_INFO
2018-01-15 Name : The remote Fedora host is missing a security update.
File : fedora_2017-0053bb9719.nasl - Type : ACT_GATHER_INFO
2017-12-26 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2017-932.nasl - Type : ACT_GATHER_INFO
2017-12-14 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2017-1342.nasl - Type : ACT_GATHER_INFO
2017-12-13 Name : The remote Fedora host is missing a security update.
File : fedora_2017-0032baa7d7.nasl - Type : ACT_GATHER_INFO
2017-12-01 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4053.nasl - Type : ACT_GATHER_INFO
2017-11-29 Name : The remote mail server is potentially affected by a remote code execution flaw.
File : exim_bdat_chunk_uaf.nasl - Type : ACT_GATHER_INFO
2017-11-28 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3493-1.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
DEBIAN https://www.debian.org/security/2017/dsa-4053
MISC http://openwall.com/lists/oss-security/2017/11/25/1
http://openwall.com/lists/oss-security/2017/11/25/2
http://openwall.com/lists/oss-security/2017/11/25/3
https://bugs.exim.org/show_bug.cgi?id=2199
https://git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde
https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659a...
https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944
https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
SECTRACK http://www.securitytracker.com/id/1039872

Alert History

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Date Informations
2020-05-23 00:58:05
  • Multiple Updates
2019-08-02 21:19:36
  • Multiple Updates
2017-12-15 13:23:45
  • Multiple Updates
2017-12-14 13:23:32
  • Multiple Updates
2017-12-08 00:22:06
  • Multiple Updates
2017-12-02 13:23:48
  • Multiple Updates
2017-12-02 09:21:47
  • Multiple Updates
2017-11-30 13:23:42
  • Multiple Updates
2017-11-29 13:24:01
  • Multiple Updates
2017-11-29 09:21:47
  • Multiple Updates
2017-11-27 09:21:28
  • Multiple Updates
2017-11-26 09:22:08
  • Multiple Updates
2017-11-25 21:22:27
  • First insertion