UBUNTU-CVE-2026-125403

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Source
https://ubuntu.com/security/CVE-2026-125403
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-125403.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-125403
Upstream
Published
2026-11-10T00:00:00Z
Modified
2026-11-11T09:39:23Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Ettercap through 0.8.4.1 contains an out-of-bounds read and size_t underflow vulnerability in sslw_remove_sts() in src/ec_sslwrap.c, caused by a stale length and an unchecked memmem() result when stripping Strict-Transport-Security headers. A malicious HTTPS server whose response passes through Ettercap's SSL interception can trigger out-of-bounds reads and memory corruption in the Ettercap process, which normally runs as root.

References

Affected packages

Ubuntu:16.04:LTS
ettercap

Package

Name
ettercap
Purl
pkg:deb/ubuntu/ettercap?arch=source&distro=xenial

Affected ranges

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

Affected versions

1:0.*
1:0.8.2-2
1:0.8.2-2build1
1:0.8.2-2ubuntu1.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ettercap-common",
            "binary_version": "1:0.8.2-2ubuntu1.16.04.1"
        },
        {
            "binary_name": "ettercap-graphical",
            "binary_version": "1:0.8.2-2ubuntu1.16.04.1"
        },
        {
            "binary_name": "ettercap-text-only",
            "binary_version": "1:0.8.2-2ubuntu1.16.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-125403.json"
Ubuntu:18.04:LTS
ettercap

Package

Name
ettercap
Purl
pkg:deb/ubuntu/ettercap?arch=source&distro=bionic

Affected ranges

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

Affected versions

1:0.*
1:0.8.2-10build1
1:0.8.2-10build2
1:0.8.2-10build3
1:0.8.2-10build4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ettercap-common",
            "binary_version": "1:0.8.2-10build4"
        },
        {
            "binary_name": "ettercap-graphical",
            "binary_version": "1:0.8.2-10build4"
        },
        {
            "binary_name": "ettercap-text-only",
            "binary_version": "1:0.8.2-10build4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-125403.json"
Ubuntu:20.04:LTS
ettercap

Package

Name
ettercap
Purl
pkg:deb/ubuntu/ettercap?arch=source&distro=focal

Affected ranges

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

Affected versions

1:0.*
1:0.8.2-10build6
1:0.8.3-1ubuntu1
1:0.8.3-2~build1
1:0.8.3-2
1:0.8.3-3
1:0.8.3-5
1:0.8.3-6
1:0.8.3-7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ettercap-common",
            "binary_version": "1:0.8.3-7"
        },
        {
            "binary_name": "ettercap-graphical",
            "binary_version": "1:0.8.3-7"
        },
        {
            "binary_name": "ettercap-text-only",
            "binary_version": "1:0.8.3-7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-125403.json"
Ubuntu:22.04:LTS
ettercap

Package

Name
ettercap
Purl
pkg:deb/ubuntu/ettercap?arch=source&distro=jammy

Affected ranges

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

Affected versions

1:0.*
1:0.8.3.1-3
1:0.8.3.1-4
1:0.8.3.1-4build1
1:0.8.3.1-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ettercap-common",
            "binary_version": "1:0.8.3.1-5"
        },
        {
            "binary_name": "ettercap-graphical",
            "binary_version": "1:0.8.3.1-5"
        },
        {
            "binary_name": "ettercap-text-only",
            "binary_version": "1:0.8.3.1-5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-125403.json"
Ubuntu:24.04:LTS
ettercap

Package

Name
ettercap
Purl
pkg:deb/ubuntu/ettercap?arch=source&distro=noble

Affected ranges

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

Affected versions

1:0.*
1:0.8.3.1-12
1:0.8.3.1-13
1:0.8.3.1-13build2
1:0.8.3.1-13build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ettercap-common",
            "binary_version": "1:0.8.3.1-13build3"
        },
        {
            "binary_name": "ettercap-graphical",
            "binary_version": "1:0.8.3.1-13build3"
        },
        {
            "binary_name": "ettercap-text-only",
            "binary_version": "1:0.8.3.1-13build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-125403.json"
Ubuntu:26.04:LTS
ettercap

Package

Name
ettercap
Purl
pkg:deb/ubuntu/ettercap?arch=source&distro=resolute

Affected ranges

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

Affected versions

1:0.*
1:0.8.3.1-15
1:0.8.3.1-15build1
1:0.8.3.1-16
1:0.8.4-2
1:0.8.4-4
1:0.8.4-5
1:0.8.4.1-1
1:0.8.4.1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ettercap-common",
            "binary_version": "1:0.8.4.1-2"
        },
        {
            "binary_name": "ettercap-graphical",
            "binary_version": "1:0.8.4.1-2"
        },
        {
            "binary_name": "ettercap-text-only",
            "binary_version": "1:0.8.4.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-125403.json"
Ubuntu:26.10
ettercap

Package

Name
ettercap
Purl
pkg:deb/ubuntu/ettercap?arch=source&distro=stonking

Affected ranges

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

Affected versions

1:0.*
1:0.8.4.1-2
1:0.8.4.1-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ettercap-common",
            "binary_version": "1:0.8.4.1-2build1"
        },
        {
            "binary_name": "ettercap-graphical",
            "binary_version": "1:0.8.4.1-2build1"
        },
        {
            "binary_name": "ettercap-text-only",
            "binary_version": "1:0.8.4.1-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-125403.json"