Email-Address-List vulnerability

Emilia Torino emilia.torino at
Fri Sep 18 11:40:28 UTC 2020

Ubuntu Security Notice USN-4517-1
September 17, 2020

libemail-address-list-perl vulnerability

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.

Software Description:
- 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
service. (CVE-2018-18898)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  libemail-address-list-perl      0.05-1+deb9u1build0.18.04.1

Ubuntu 16.04 LTS:
  libemail-address-list-perl      0.05-1+deb9u1build0.16.04.1

In general, a standard system update will make all the necessary changes.


Package Information:

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <>

More information about the ubuntu-security-announce mailing list