emilia.torino at canonical.com
Fri Sep 18 11:40:28 UTC 2020
Ubuntu Security Notice USN-4517-1
September 17, 2020
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Email-Address-List could be made to remotely exhaust resources if it
received specially crafted email data.
- libemail-address-list-perl: RFC close address list parsing
It was discovered that Email-Address-List does not properly parse email
addresses during email-ingestion. A remote attacker could use this issue
to cause an algorithmic complexity attack, resulting in a denial of
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
Ubuntu 16.04 LTS:
In general, a standard system update will make all the necessary changes.
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