Vulnerability Name:

CVE-2016-9963 (CCN-119848)

Assigned:2016-12-16
Published:2016-12-16
Updated:2017-02-15
Summary:Exim before 4.87.1 might allow remote attackers to obtain the private DKIM signing key via vectors related to log files and bounce messages.
CVSS v3 Severity:5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:2.6 Low (CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-320
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2016-9963

Source: CCN
Type: SECTRACK ID: 1037484
Exim Flaw Lets Remote Users Obtain Potentially Sensitive Information on the Target System

Source: DEBIAN
Type: Third Party Advisory
DSA-3747

Source: CCN
Type: Exim Web Site
Exim Internet Mailer

Source: CONFIRM
Type: Mitigation, Vendor Advisory
http://www.exim.org/static/doc/CVE-2016-9963.txt

Source: CCN
Type: oss-sec Mailing List, Fri, 16 Dec 2016 00:36:45 +0100
CVE Request - Exim 4.69-4.87 - disclosure of private information

Source: BID
Type: Third Party Advisory, VDB Entry
94947

Source: CCN
Type: BID-94947
Exim CVE-2016-9963 Unspecified Information Disclosure Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1037484

Source: UBUNTU
Type: Third Party Advisory
USN-3164-1

Source: CONFIRM
Type: Issue Tracking, Mitigation, Vendor Advisory
https://bugs.exim.org/show_bug.cgi?id=1996

Source: XF
Type: UNKNOWN
exim-cve20169963-info-disc(119848)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:exim:exim:*:*:*:*:*:*:*:* (Version <= 4.87)

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.10:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:exim:exim:4.69:*:*:*:*:*:*:*
  • OR cpe:/a:exim:exim:4.70:*:*:*:*:*:*:*
  • OR cpe:/a:exim:exim:4.71:*:*:*:*:*:*:*
  • OR cpe:/a:exim:exim:4.72:*:*:*:*:*:*:*
  • OR cpe:/a:exim:exim:4.80:*:*:*:*:*:*:*
  • OR cpe:/a:exim:exim:4.75:*:*:*:*:*:*:*
  • OR cpe:/a:exim:exim:4.82:*:*:*:*:*:*:*
  • OR cpe:/a:exim:exim:4.87:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20169963
    V
    		CVE-2016-9963
    2022-06-30
    oval:org.opensuse.security:def:112207
    P
    		exim-4.94.2-4.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:105738
    P
    		exim-4.94.2-4.2 on GA media (Moderate)
    2021-10-01
    oval:com.ubuntu.precise:def:20169963000
    V
    		CVE-2016-9963 on Ubuntu 12.04 LTS (precise) - medium.
    2017-02-01
    oval:com.ubuntu.trusty:def:20169963000
    V
    		CVE-2016-9963 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-02-01
    oval:com.ubuntu.xenial:def:201699630000000
    V
    		CVE-2016-9963 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-02-01
    oval:com.ubuntu.xenial:def:20169963000
    V
    		CVE-2016-9963 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-02-01
    oval:org.cisecurity:def:1663
    P
    		DSA-3747-1 -- exim4 -- security update
    2017-01-27
    BACK
    exim exim *
    canonical ubuntu linux 12.04
    canonical ubuntu linux 14.04
    canonical ubuntu linux 16.04
    canonical ubuntu linux 16.10
    debian debian linux 8.0
    exim exim 4.69
    exim exim 4.70
    exim exim 4.71
    exim exim 4.72
    exim exim 4.80
    exim exim 4.75
    exim exim 4.82
    exim exim 4.87