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amazonAmazonALAS-2019-1310
HistoryOct 18, 2019 - 11:22 p.m.

Critical: exim

2019-10-1823:22:00
alas.aws.amazon.com
53

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.915 High

EPSS

Percentile

98.9%

Issue Overview:

Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.(CVE-2019-16928)

Affected Packages:

exim

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

New Packages:

i686:  
    exim-pgsql-4.92-1.25.amzn1.i686  
    exim-4.92-1.25.amzn1.i686  
    exim-debuginfo-4.92-1.25.amzn1.i686  
    exim-greylist-4.92-1.25.amzn1.i686  
    exim-mon-4.92-1.25.amzn1.i686  
    exim-mysql-4.92-1.25.amzn1.i686  
  
src:  
    exim-4.92-1.25.amzn1.src  
  
x86_64:  
    exim-debuginfo-4.92-1.25.amzn1.x86_64  
    exim-greylist-4.92-1.25.amzn1.x86_64  
    exim-4.92-1.25.amzn1.x86_64  
    exim-pgsql-4.92-1.25.amzn1.x86_64  
    exim-mon-4.92-1.25.amzn1.x86_64  
    exim-mysql-4.92-1.25.amzn1.x86_64  

Additional References

Red Hat: CVE-2019-16928

Mitre: CVE-2019-16928

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.915 High

EPSS

Percentile

98.9%