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CVE-2020-3812

Publication date 26 May 2020

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker's home directory, without dropping its privileges first.

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 vulnerability to cause netqmail to disclose sensitive information.

Status

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

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Severity score breakdown

Parameter Value
Base score 5.5 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-4556-1
    • netqmail vulnerabilities
    • 29 September 2020
    • USN-4621-1
    • netqmail vulnerabilities
    • 5 November 2020

Other references