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Alerts This Week
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Ubuntu 18.04 LTS: USN-4517-1 Critical: Email-Address-List DoS

ubuntu
Calendar Grey September 18, 2020
Dist Ubuntu Esm H88
This advisory warns of a vulnerability in the Email-Address-List module for various Ubuntu versions, potentially risking privacy and system integrity
Email-Address-List could be made to remotely exhaust resources if it received specially crafted email data.

Summary

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

Details:

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)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu email exhaustion perl library update

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.

References

https://ubuntu.com/security/notices/USN-4517-1

CVE-2018-18898

Severity
critical
Lowest
Low
Medium
High
Critical

September 17, 2020

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu email exhaustion perl library update

Package Information

https://launchpad.net/ubuntu/+source/libemail-address-list-perl/0.05-1+deb9u1build0.18.04.1
https://launchpad.net/ubuntu/+source/libemail-address-list-perl/0.05-1+deb9u1build0.16.04.1

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