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amazonAmazonALAS-2017-804
HistoryMar 06, 2017 - 2:00 p.m.

Medium: exim

2017-03-0614:00:00
alas.aws.amazon.com
9

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.6 Low

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:H/Au:N/C:P/I:N/A:N

0.004 Low

EPSS

Percentile

73.1%

Issue Overview:

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.

Affected Packages:

exim

Issue Correction:
Run yum update exim to update your system.

New Packages:

i686:  
    exim-4.88-2.11.amzn1.i686  
    exim-mon-4.88-2.11.amzn1.i686  
    exim-mysql-4.88-2.11.amzn1.i686  
    exim-pgsql-4.88-2.11.amzn1.i686  
    exim-debuginfo-4.88-2.11.amzn1.i686  
    exim-greylist-4.88-2.11.amzn1.i686  
  
src:  
    exim-4.88-2.11.amzn1.src  
  
x86_64:  
    exim-pgsql-4.88-2.11.amzn1.x86_64  
    exim-mon-4.88-2.11.amzn1.x86_64  
    exim-debuginfo-4.88-2.11.amzn1.x86_64  
    exim-mysql-4.88-2.11.amzn1.x86_64  
    exim-4.88-2.11.amzn1.x86_64  
    exim-greylist-4.88-2.11.amzn1.x86_64  

Additional References

Red Hat: CVE-2016-9963

Mitre: CVE-2016-9963

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.6 Low

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:H/Au:N/C:P/I:N/A:N

0.004 Low

EPSS

Percentile

73.1%

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