UBUNTU-CVE-2021-28374

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Source
https://ubuntu.com/security/CVE-2021-28374
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28374.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-28374
Upstream
Published
2021-03-15T05:15:00Z
Modified
2025-09-08T16:47:03Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The Debian courier-authlib package before 0.71.1-2 for Courier Authentication Library creates a /run/courier/authdaemon directory with weak permissions, allowing an attacker to read user information. This may include a cleartext password in some configurations. In general, it includes the user's existence, uid and gids, home and/or Maildir directory, quota, and some type of password information (such as a hash).

References

Affected packages

Ubuntu:Pro:16.04:LTS / courier-authlib

Package

Name
courier-authlib
Purl
pkg:deb/ubuntu/courier-authlib@0.66.4-3build1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.66.1-1
0.66.4-2
0.66.4-3
0.66.4-3build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "courier-authdaemon",
            "binary_version": "0.66.4-3build1"
        },
        {
            "binary_name": "courier-authlib",
            "binary_version": "0.66.4-3build1"
        },
        {
            "binary_name": "courier-authlib-dev",
            "binary_version": "0.66.4-3build1"
        },
        {
            "binary_name": "courier-authlib-ldap",
            "binary_version": "0.66.4-3build1"
        },
        {
            "binary_name": "courier-authlib-mysql",
            "binary_version": "0.66.4-3build1"
        },
        {
            "binary_name": "courier-authlib-pipe",
            "binary_version": "0.66.4-3build1"
        },
        {
            "binary_name": "courier-authlib-postgresql",
            "binary_version": "0.66.4-3build1"
        },
        {
            "binary_name": "courier-authlib-sqlite",
            "binary_version": "0.66.4-3build1"
        },
        {
            "binary_name": "courier-authlib-userdb",
            "binary_version": "0.66.4-3build1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / courier-authlib

Package

Name
courier-authlib
Purl
pkg:deb/ubuntu/courier-authlib@0.68.0-4ubuntu0.1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.68.0-3ubuntu1
0.68.0-4
0.68.0-4build1
0.68.0-4ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "courier-authdaemon",
            "binary_version": "0.68.0-4ubuntu0.1"
        },
        {
            "binary_name": "courier-authlib",
            "binary_version": "0.68.0-4ubuntu0.1"
        },
        {
            "binary_name": "courier-authlib-dev",
            "binary_version": "0.68.0-4ubuntu0.1"
        },
        {
            "binary_name": "courier-authlib-ldap",
            "binary_version": "0.68.0-4ubuntu0.1"
        },
        {
            "binary_name": "courier-authlib-mysql",
            "binary_version": "0.68.0-4ubuntu0.1"
        },
        {
            "binary_name": "courier-authlib-pipe",
            "binary_version": "0.68.0-4ubuntu0.1"
        },
        {
            "binary_name": "courier-authlib-postgresql",
            "binary_version": "0.68.0-4ubuntu0.1"
        },
        {
            "binary_name": "courier-authlib-sqlite",
            "binary_version": "0.68.0-4ubuntu0.1"
        },
        {
            "binary_name": "courier-authlib-userdb",
            "binary_version": "0.68.0-4ubuntu0.1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / courier-authlib

Package

Name
courier-authlib
Purl
pkg:deb/ubuntu/courier-authlib@0.69.0-2build3?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.69.0-2build2
0.69.0-2build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "courier-authdaemon",
            "binary_version": "0.69.0-2build3"
        },
        {
            "binary_name": "courier-authlib",
            "binary_version": "0.69.0-2build3"
        },
        {
            "binary_name": "courier-authlib-dev",
            "binary_version": "0.69.0-2build3"
        },
        {
            "binary_name": "courier-authlib-ldap",
            "binary_version": "0.69.0-2build3"
        },
        {
            "binary_name": "courier-authlib-mysql",
            "binary_version": "0.69.0-2build3"
        },
        {
            "binary_name": "courier-authlib-pipe",
            "binary_version": "0.69.0-2build3"
        },
        {
            "binary_name": "courier-authlib-postgresql",
            "binary_version": "0.69.0-2build3"
        },
        {
            "binary_name": "courier-authlib-sqlite",
            "binary_version": "0.69.0-2build3"
        },
        {
            "binary_name": "courier-authlib-userdb",
            "binary_version": "0.69.0-2build3"
        }
    ]
}

Ubuntu:22.04:LTS / courier-authlib

Package

Name
courier-authlib
Purl
pkg:deb/ubuntu/courier-authlib@0.71.1-2build1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.71.1-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "courier-authdaemon",
            "binary_version": "0.71.1-2build1"
        },
        {
            "binary_name": "courier-authlib",
            "binary_version": "0.71.1-2build1"
        },
        {
            "binary_name": "courier-authlib-dev",
            "binary_version": "0.71.1-2build1"
        },
        {
            "binary_name": "courier-authlib-ldap",
            "binary_version": "0.71.1-2build1"
        },
        {
            "binary_name": "courier-authlib-mysql",
            "binary_version": "0.71.1-2build1"
        },
        {
            "binary_name": "courier-authlib-pipe",
            "binary_version": "0.71.1-2build1"
        },
        {
            "binary_name": "courier-authlib-postgresql",
            "binary_version": "0.71.1-2build1"
        },
        {
            "binary_name": "courier-authlib-sqlite",
            "binary_version": "0.71.1-2build1"
        },
        {
            "binary_name": "courier-authlib-userdb",
            "binary_version": "0.71.1-2build1"
        }
    ]
}