UBUNTU-CVE-2018-6789

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Source
https://ubuntu.com/security/CVE-2018-6789
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-6789.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-6789
Upstream
Downstream
Related
Published
2018-02-07T00:00:00Z
Modified
2025-09-08T16:44:46Z
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
  • 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
  • 9.8 (Critical) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.

References

Affected packages

Ubuntu:14.04:LTS / exim4

Package

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

Affected ranges

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

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "exim4",
            "binary_version": "4.82-3ubuntu2.4"
        },
        {
            "binary_name": "exim4-base",
            "binary_version": "4.82-3ubuntu2.4"
        },
        {
            "binary_name": "exim4-config",
            "binary_version": "4.82-3ubuntu2.4"
        },
        {
            "binary_name": "exim4-daemon-heavy",
            "binary_version": "4.82-3ubuntu2.4"
        },
        {
            "binary_name": "exim4-daemon-light",
            "binary_version": "4.82-3ubuntu2.4"
        },
        {
            "binary_name": "exim4-dev",
            "binary_version": "4.82-3ubuntu2.4"
        },
        {
            "binary_name": "eximon4",
            "binary_version": "4.82-3ubuntu2.4"
        }
    ]
}

Ubuntu:16.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.86.2-2ubuntu2.3?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.86.2-2ubuntu2.3

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "exim4",
            "binary_version": "4.86.2-2ubuntu2.3"
        },
        {
            "binary_name": "exim4-base",
            "binary_version": "4.86.2-2ubuntu2.3"
        },
        {
            "binary_name": "exim4-config",
            "binary_version": "4.86.2-2ubuntu2.3"
        },
        {
            "binary_name": "exim4-daemon-heavy",
            "binary_version": "4.86.2-2ubuntu2.3"
        },
        {
            "binary_name": "exim4-daemon-light",
            "binary_version": "4.86.2-2ubuntu2.3"
        },
        {
            "binary_name": "exim4-dev",
            "binary_version": "4.86.2-2ubuntu2.3"
        },
        {
            "binary_name": "eximon4",
            "binary_version": "4.86.2-2ubuntu2.3"
        }
    ]
}