UBUNTU-CVE-2021-37845

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Source
https://ubuntu.com/security/CVE-2021-37845
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-37845.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-37845
Upstream
  • CVE-2021-37845
Published
2023-05-29T19:15:00Z
Modified
2025-10-24T04:50:27Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in Citadel through webcit-932. A meddler-in-the-middle attacker can fixate their own session during the cleartext phase before a STARTTLS command (a violation of "The STARTTLS command is only valid in non-authenticated state." in RFC2595). This potentially allows an attacker to cause a victim's e-mail messages to be stored into an attacker's IMAP mailbox, but depends on details of the victim's client behavior.

References

Affected packages

Ubuntu:16.04:LTS / citadel

Package

Name
citadel
Purl
pkg:deb/ubuntu/citadel@9.01-1?arch=source&distro=xenial

Affected ranges

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

Affected versions

9.*
9.01-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "citadel-mta",
            "binary_version": "9.01-1"
        },
        {
            "binary_name": "citadel-server",
            "binary_version": "9.01-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-37845.json"

Ubuntu:18.04:LTS / citadel

Package

Name
citadel
Purl
pkg:deb/ubuntu/citadel@917-2?arch=source&distro=bionic

Affected ranges

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

Affected versions

Other
911-1
917-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "citadel-server",
            "binary_version": "917-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-37845.json"

Ubuntu:20.04:LTS / citadel

Package

Name
citadel
Purl
pkg:deb/ubuntu/citadel@917-4?arch=source&distro=focal

Affected ranges

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

Affected versions

Other
917-3
917-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "citadel-server",
            "binary_version": "917-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-37845.json"