CVE-2020-3811

Publication date 26 May 2020

Last updated 25 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

qmail-verify as used in netqmail 1.06 is prone to a mail-address verification bypass vulnerability.

From the Ubuntu Security Team

It was discovered that netqmail did not properly handle certain input when validating email addresses. An attacker could use this to bypass email address validation.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
netqmail	20.10 groovy	Not in release
	20.04 LTS focal	Fixed 1.06-6.2~deb10u1build0.20.04.1
	19.10 eoan	Ignored end of life
	18.04 LTS bionic	Fixed 1.06-6.2~deb10u1build0.18.04.1
	16.04 LTS xenial	Fixed 1.06-6.2~deb10u1build0.16.04.1
	14.04 LTS trusty	Fixed 1.06-6.2~deb10u1build0.14.04.1+esm1

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Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N