UBUNTU-CVE-2026-104267

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Source
https://ubuntu.com/security/CVE-2026-104267
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-104267.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-104267
Upstream
Published
2026-11-09T00:00:00Z
Modified
2026-11-10T02:50:21Z
Severity
  • 4.1 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Botan is a C++ cryptography library. From 2.7.0 until 3.13.0, Botan's Scrypt implementation on 32-bit platforms computes required memory with unchecked multiplication, allowing attacker-controlled Scrypt parameters to wrap the allocation size and create a buffer smaller than the algorithm subsequently writes. The issue affects systems that enable Scrypt and accept arbitrary parameters from a hostile source, including applications that decrypt attacker-supplied encrypted private keys. A triggering parameter set can cause approximately four gigabytes of Scrypt output to be written past the allocated heap buffer, immediately crashing the process and causing denial of service. Arbitrary code execution is not demonstrated and appears difficult, but cannot be excluded from the overwrite primitive. This issue is fixed in version 3.13.0.

References

Affected packages

Ubuntu:18.04:LTS
botan

Package

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

Affected ranges

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

Affected versions

2.*
2.4.0-3
2.4.0-4
2.4.0-5ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "2.4.0-5ubuntu1"
        },
        {
            "binary_name": "libbotan-2-4",
            "binary_version": "2.4.0-5ubuntu1"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "2.4.0-5ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-104267.json"
Ubuntu:20.04:LTS
botan

Package

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

Affected ranges

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

Affected versions

2.*
2.9.0-2
2.9.0-2build1
2.12.1-2
2.12.1-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "2.12.1-2build1"
        },
        {
            "binary_name": "libbotan-2-12",
            "binary_version": "2.12.1-2build1"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "2.12.1-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-104267.json"
Ubuntu:26.04:LTS
botan3

Package

Name
botan3
Purl
pkg:deb/ubuntu/botan3?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.7.1+dfsg-2
3.10.0+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "3.10.0+dfsg-2"
        },
        {
            "binary_name": "libbotan-3-10",
            "binary_version": "3.10.0+dfsg-2"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "3.10.0+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-104267.json"
Ubuntu:26.10
botan3

Package

Name
botan3
Purl
pkg:deb/ubuntu/botan3?arch=source&distro=stonking

Affected ranges

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

Affected versions

3.*
3.10.0+dfsg-2
3.11.1+dfsg-2
3.12.0+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "3.12.0+dfsg-2"
        },
        {
            "binary_name": "libbotan-3-12",
            "binary_version": "3.12.0+dfsg-2"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "3.12.0+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-104267.json"
Ubuntu:Pro:22.04:LTS
botan

Package

Name
botan
Purl
pkg:deb/ubuntu/botan?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

2.*
2.17.3+dfsg-3
2.19.1+dfsg-2ubuntu1
2.19.1+dfsg-2ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "2.19.1+dfsg-2ubuntu1+esm1"
        },
        {
            "binary_name": "libbotan-2-19",
            "binary_version": "2.19.1+dfsg-2ubuntu1+esm1"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "2.19.1+dfsg-2ubuntu1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-104267.json"
Ubuntu:Pro:24.04:LTS
botan

Package

Name
botan
Purl
pkg:deb/ubuntu/botan?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

2.*
2.19.3+dfsg-1ubuntu1
2.19.3+dfsg-1ubuntu2
2.19.3+dfsg-1ubuntu2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "2.19.3+dfsg-1ubuntu2+esm1"
        },
        {
            "binary_name": "libbotan-2-19",
            "binary_version": "2.19.3+dfsg-1ubuntu2+esm1"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "2.19.3+dfsg-1ubuntu2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-104267.json"