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AUSCERT External Security Bulletin Redistribution
ESB-2019.3664
USN-4141-1: Exim vulnerability
30 September 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: exim4
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-16928
Original Bulletin:
https://usn.ubuntu.com/4141-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running exim4 check for an updated version of the software for their
operating system.
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USN-4141-1: Exim vulnerability
28 September 2019
exim4 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
Summary
Exim could be made to crash or run programs if it received specially crafted
network traffic.
Software Description
o exim4 - Exim is a mail transport agent
Details
It was discovered that Exim incorrectly handled certain string operations. A
remote attacker could use this issue to cause Exim to crash, resulting in a
denial of service, or possibly execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.04
exim4-daemon-heavy - 4.92-4ubuntu1.4
exim4-daemon-light - 4.92-4ubuntu1.4
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2019-16928
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