CVE-2018-18898

Publication date 21 March 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libemail-address-list-perl	20.04 LTS focal	Fixed 0.06-1
	19.10 eoan	Fixed 0.06-1
	19.04 disco	Fixed 0.06-1
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Fixed 0.05-1+deb9u1build0.18.04.1
	16.04 LTS xenial	Fixed 0.05-1+deb9u1build0.16.04.1
	14.04 LTS trusty	Not in release

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	7.5 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-4517-1
Email-Address-List vulnerability
17 September 2020