UBUNTU-CVE-2023-42118

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Source
https://ubuntu.com/security/CVE-2023-42118
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-42118.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-42118
Upstream
Published
2024-05-03T03:15:00Z
Modified
2025-07-14T06:46:27.414272Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • - medium
Summary
[none]
Details

Exim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-17578.

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=esm-infra-legacy/trusty

Affected ranges

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

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
4.82-3ubuntu2.4+esm8

Ubuntu:Pro:16.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.86.2-2ubuntu2.6+esm8?arch=source&distro=esm-infra/xenial

Affected ranges

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

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
4.86.2-2ubuntu2.6+esm7
4.86.2-2ubuntu2.6+esm8

Ubuntu:Pro:16.04:LTS / libspf2

Package

Name
libspf2
Purl
pkg:deb/ubuntu/libspf2@1.2.10-6ubuntu0.1~esm2?arch=source&distro=esm-apps/xenial

Affected ranges

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

Affected versions

1.*

1.2.10-6
1.2.10-6build1
1.2.10-6ubuntu0.1~esm1
1.2.10-6ubuntu0.1~esm2

Ubuntu:Pro:18.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.90.1-1ubuntu1.10+esm5?arch=source&distro=esm-infra/bionic

Affected ranges

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

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
4.90.1-1ubuntu1.10+esm4
4.90.1-1ubuntu1.10+esm5

Ubuntu:Pro:18.04:LTS / libspf2

Package

Name
libspf2
Purl
pkg:deb/ubuntu/libspf2@1.2.10-7ubuntu0.18.04.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

1.*

1.2.10-7build2
1.2.10-7ubuntu0.18.04.1~esm1

Ubuntu:Pro:20.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.93-13ubuntu1.12?arch=source&distro=esm-infra/focal

Affected ranges

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

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
4.93-13ubuntu1.11
4.93-13ubuntu1.12

Ubuntu:Pro:20.04:LTS / libspf2

Package

Name
libspf2
Purl
pkg:deb/ubuntu/libspf2@1.2.10-7+deb9u2build0.20.04.1?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

1.*

1.2.10-7build3
1.2.10-7build4
1.2.10-7+deb9u2build0.20.04.1

Ubuntu:22.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.95-4ubuntu2.6?arch=source&distro=jammy

Affected ranges

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

Affected versions

4.*

4.94.2-7ubuntu2
4.95-2ubuntu2
4.95-4ubuntu1
4.95-4ubuntu2
4.95-4ubuntu2.1
4.95-4ubuntu2.2
4.95-4ubuntu2.3
4.95-4ubuntu2.4
4.95-4ubuntu2.5
4.95-4ubuntu2.6

Ubuntu:22.04:LTS / libspf2

Package

Name
libspf2
Purl
pkg:deb/ubuntu/libspf2@1.2.10-7.1ubuntu1?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*

1.2.10-7.1
1.2.10-7.1ubuntu1

Ubuntu:24.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.97-4ubuntu4.3?arch=source&distro=noble

Affected ranges

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

Affected versions

4.*

4.96-17ubuntu2
4.96-17ubuntu2.1
4.97-3ubuntu1
4.97-4ubuntu1
4.97-4ubuntu3
4.97-4ubuntu4
4.97-4ubuntu4.1
4.97-4ubuntu4.2
4.97-4ubuntu4.3

Ubuntu:24.04:LTS / libspf2

Package

Name
libspf2
Purl
pkg:deb/ubuntu/libspf2@1.2.10-8.1ubuntu3?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*

1.2.10-7.2build1
1.2.10-8
1.2.10-8build1
1.2.10-8.1ubuntu2
1.2.10-8.1ubuntu3

Ubuntu:25.04 / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4@4.98.1-1ubuntu2?arch=source&distro=plucky

Affected ranges

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

Affected versions

4.*

4.98-1ubuntu2
4.98-1ubuntu3
4.98-2ubuntu1
4.98-2ubuntu2
4.98-3ubuntu1
4.98-4ubuntu1
4.98.1-1ubuntu1
4.98.1-1ubuntu2

Ubuntu:25.04 / libspf2

Package

Name
libspf2
Purl
pkg:deb/ubuntu/libspf2@1.2.10-8.3?arch=source&distro=plucky

Affected ranges

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

Affected versions

1.*

1.2.10-8.2
1.2.10-8.2build1
1.2.10-8.3