USN-6881-1

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Source
https://ubuntu.com/security/notices/USN-6881-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6881-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-6881-1
Upstream
Related
Published
2024-07-08T09:37:45.896446Z
Modified
2025-10-13T04:37:35Z
Summary
exim4 vulnerability
Details

It was discovered that Exim did not enforce STARTTLS sync point on client side. An attacker could possibly use this issue to perform response injection during MTA SMTP sending.

References

Affected packages

Ubuntu:Pro:14.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.82-3ubuntu2.4+esm8?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.82-3ubuntu2.4+esm8

Affected versions

4.*

4.80-7ubuntu3
4.80-7ubuntu4
4.80-9ubuntu1
4.80-9ubuntu2
4.82-3ubuntu1
4.82-3ubuntu2
4.82-3ubuntu2.1
4.82-3ubuntu2.2
4.82-3ubuntu2.3
4.82-3ubuntu2.4
4.82-3ubuntu2.4+esm1
4.82-3ubuntu2.4+esm2
4.82-3ubuntu2.4+esm3
4.82-3ubuntu2.4+esm4
4.82-3ubuntu2.4+esm6
4.82-3ubuntu2.4+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.82-3ubuntu2.4+esm8",
            "binary_name": "exim4"
        },
        {
            "binary_version": "4.82-3ubuntu2.4+esm8",
            "binary_name": "exim4-base"
        },
        {
            "binary_version": "4.82-3ubuntu2.4+esm8",
            "binary_name": "exim4-config"
        },
        {
            "binary_version": "4.82-3ubuntu2.4+esm8",
            "binary_name": "exim4-daemon-heavy"
        },
        {
            "binary_version": "4.82-3ubuntu2.4+esm8",
            "binary_name": "exim4-daemon-light"
        },
        {
            "binary_version": "4.82-3ubuntu2.4+esm8",
            "binary_name": "exim4-dev"
        },
        {
            "binary_version": "4.82-3ubuntu2.4+esm8",
            "binary_name": "eximon4"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6881-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ],
            "id": "CVE-2021-38371"
        }
    ],
    "ecosystem": "Ubuntu:Pro:14.04:LTS"
}

Ubuntu:Pro:16.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.86.2-2ubuntu2.6+esm7?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.86.2-2ubuntu2.6+esm7

Affected versions

4.*

4.86-3ubuntu1
4.86-7ubuntu1
4.86-7ubuntu2
4.86-7ubuntu3
4.86.2-2ubuntu1
4.86.2-2ubuntu2
4.86.2-2ubuntu2.1
4.86.2-2ubuntu2.2
4.86.2-2ubuntu2.3
4.86.2-2ubuntu2.4
4.86.2-2ubuntu2.5
4.86.2-2ubuntu2.6
4.86.2-2ubuntu2.6+esm1
4.86.2-2ubuntu2.6+esm2
4.86.2-2ubuntu2.6+esm4
4.86.2-2ubuntu2.6+esm5
4.86.2-2ubuntu2.6+esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.86.2-2ubuntu2.6+esm7",
            "binary_name": "exim4"
        },
        {
            "binary_version": "4.86.2-2ubuntu2.6+esm7",
            "binary_name": "exim4-base"
        },
        {
            "binary_version": "4.86.2-2ubuntu2.6+esm7",
            "binary_name": "exim4-config"
        },
        {
            "binary_version": "4.86.2-2ubuntu2.6+esm7",
            "binary_name": "exim4-daemon-heavy"
        },
        {
            "binary_version": "4.86.2-2ubuntu2.6+esm7",
            "binary_name": "exim4-daemon-light"
        },
        {
            "binary_version": "4.86.2-2ubuntu2.6+esm7",
            "binary_name": "exim4-dev"
        },
        {
            "binary_version": "4.86.2-2ubuntu2.6+esm7",
            "binary_name": "eximon4"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6881-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ],
            "id": "CVE-2021-38371"
        }
    ],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}

Ubuntu:Pro:18.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.90.1-1ubuntu1.10+esm4?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.90.1-1ubuntu1.10+esm4

Affected versions

4.*

4.89-5ubuntu1
4.89-9ubuntu1
4.89-9ubuntu2
4.89-9ubuntu3
4.89-9ubuntu4
4.90.1-1ubuntu1
4.90.1-1ubuntu1.1
4.90.1-1ubuntu1.2
4.90.1-1ubuntu1.3
4.90.1-1ubuntu1.4
4.90.1-1ubuntu1.5
4.90.1-1ubuntu1.8
4.90.1-1ubuntu1.9
4.90.1-1ubuntu1.10
4.90.1-1ubuntu1.10+esm1
4.90.1-1ubuntu1.10+esm2
4.90.1-1ubuntu1.10+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.90.1-1ubuntu1.10+esm4",
            "binary_name": "exim4"
        },
        {
            "binary_version": "4.90.1-1ubuntu1.10+esm4",
            "binary_name": "exim4-base"
        },
        {
            "binary_version": "4.90.1-1ubuntu1.10+esm4",
            "binary_name": "exim4-config"
        },
        {
            "binary_version": "4.90.1-1ubuntu1.10+esm4",
            "binary_name": "exim4-daemon-heavy"
        },
        {
            "binary_version": "4.90.1-1ubuntu1.10+esm4",
            "binary_name": "exim4-daemon-light"
        },
        {
            "binary_version": "4.90.1-1ubuntu1.10+esm4",
            "binary_name": "exim4-dev"
        },
        {
            "binary_version": "4.90.1-1ubuntu1.10+esm4",
            "binary_name": "eximon4"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6881-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ],
            "id": "CVE-2021-38371"
        }
    ],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}

Ubuntu:20.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.93-13ubuntu1.11?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.93-13ubuntu1.11

Affected versions

4.*

4.92.1-1ubuntu3
4.92.1-1ubuntu4
4.93~RC2-1ubuntu1
4.93-9ubuntu1
4.93-11ubuntu1
4.93-12ubuntu1
4.93-13ubuntu1
4.93-13ubuntu1.1
4.93-13ubuntu1.5
4.93-13ubuntu1.6
4.93-13ubuntu1.7
4.93-13ubuntu1.8
4.93-13ubuntu1.9
4.93-13ubuntu1.10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.93-13ubuntu1.11",
            "binary_name": "exim4"
        },
        {
            "binary_version": "4.93-13ubuntu1.11",
            "binary_name": "exim4-base"
        },
        {
            "binary_version": "4.93-13ubuntu1.11",
            "binary_name": "exim4-config"
        },
        {
            "binary_version": "4.93-13ubuntu1.11",
            "binary_name": "exim4-daemon-heavy"
        },
        {
            "binary_version": "4.93-13ubuntu1.11",
            "binary_name": "exim4-daemon-light"
        },
        {
            "binary_version": "4.93-13ubuntu1.11",
            "binary_name": "exim4-dev"
        },
        {
            "binary_version": "4.93-13ubuntu1.11",
            "binary_name": "eximon4"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6881-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ],
            "id": "CVE-2021-38371"
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}