Bug 1405322 (CVE-2016-9963)

Summary:	CVE-2016-9963 exim: Possible information disclosure to remote atacker
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dwmw2, jskarvad, tremble
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	It was found that Exim leaked DKIM signing private keys to the "mainlog" log file. As a result, an attacker with access to system log files could potentially access these leaked DKIM private keys.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:04:30 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1405323, 1405324
Bug Blocks:

Description Adam Mariš 2016-12-16 08:32:20 UTC

Under certain circumstances it's possible for remote attacker to leak private information.

Affected versions: 4.69 -> 4.87

Upstream bug:

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

CVE assignment:

http://seclists.org/oss-sec/2016/q4/694

Comment 1 Adam Mariš 2016-12-16 08:32:51 UTC

Created exim tracking bugs for this issue:

Affects: fedora-all [bug 1405323]
Affects: epel-all [bug 1405324]

Comment 2 Huzaifa S. Sidhpurwala 2017-01-04 10:18:57 UTC

External Reference:

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

Comment 3 Huzaifa S. Sidhpurwala 2017-01-04 10:26:40 UTC

Statement:

This flaw does not affect the version of Exim shipped with Red Hat Enterprise Linux 5 because it is not built with DKIM (DomainKeys Identified Mail) support.