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Exim could be made to crash or run programs if it received specially crafted network traffic.
==========================================================================
Ubuntu Security Notice USN-4141-1
September 28, 2019
exim4 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
Summary:
Exim could be made to crash or run programs if it received specially
crafted network traffic.
Software Description:
- 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
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4141-1
CVE-2019-16928
Package Information:
https://launchpad.net/ubuntu/+source/exim4/4.92-4ubuntu1.4
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