UBUNTU-CVE-2021-44143

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Source
https://ubuntu.com/security/CVE-2021-44143
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44143.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-44143
Upstream
Published
2021-11-22T20:15:00Z
Modified
2026-01-20T17:26:11.588265Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in mbsync in isync 1.4.0 through 1.4.3. Due to an unchecked condition, a malicious or compromised IMAP server could use a crafted mail message that lacks headers (i.e., one that starts with an empty line) to provoke a heap overflow, which could conceivably be exploited for remote code execution.

References

Affected packages

Ubuntu:16.04:LTS / isync

Package

Name
isync
Purl
pkg:deb/ubuntu/isync@1.1.2-1?arch=source&distro=xenial

Affected ranges

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

Affected versions

1.*

1.1.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.1.2-1",
            "binary_name": "isync"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44143.json"

Ubuntu:22.04:LTS / isync

Package

Name
isync
Purl
pkg:deb/ubuntu/isync@1.4.4-3ubuntu0.22.04.1?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*

1.3.0-2.2
1.4.3-1
1.4.4-1
1.4.4-3
1.4.4-3ubuntu0.22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.4.4-3ubuntu0.22.04.1",
            "binary_name": "isync"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44143.json"

Ubuntu:24.04:LTS / isync

Package

Name
isync
Purl
pkg:deb/ubuntu/isync@1.4.4-5build3?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*

1.4.4-5
1.4.4-5build2
1.4.4-5build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.4.4-5build3",
            "binary_name": "isync"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44143.json"

Ubuntu:25.10 / isync

Package

Name
isync
Purl
pkg:deb/ubuntu/isync@1.5.1-1ubuntu1?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*

1.4.4-5build3
1.5.1-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.5.1-1ubuntu1",
            "binary_name": "isync"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44143.json"