CVE-2016-9963: 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

Medium severity · published Feb 1, 2017

CVE-2016-9963

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

5.9

CVSS

3.1%

EPSS

On KEV

Description

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 vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack vector

Network

Complexity

High

Privileges

None

User interaction

None

Confidentiality

High

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)3.1% · higher than 88% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Debian Linux · Debian

8.0 · source: NVD

Exim · Exim

through 4.87 · source: NVD

Ubuntu Linux · Canonical

12.04; 14.04; 16.04; 16.10 · source: NVD

Affected product

Ubuntu Linux

Canonical

All Ubuntu Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2016-9963

CVE.org

https://www.cve.org/CVERecord?id=CVE-2016-9963

Third Party Advisory

http://www.debian.org/security/2016/dsa-3747

Mitigation

http://www.exim.org/static/doc/CVE-2016-9963.txt

Third Party Advisory

http://www.securityfocus.com/bid/94947

Third Party Advisory

http://www.securitytracker.com/id/1037484

Third Party Advisory

http://www.ubuntu.com/usn/USN-3164-1

Issue Tracking

https://bugs.exim.org/show_bug.cgi?id=1996