UBUNTU-CVE-2026-34181

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Source
https://ubuntu.com/security/CVE-2026-34181
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34181.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-34181
Upstream
Downstream
Related
Published
2026-06-09T00:00:00Z
Modified
2026-09-15T08:30:54Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

Issue Summary: The PKCS#12 file processing fails to perform sufficient input validation for files that use Password-Based Message Authentication Code 1 (PBMAC1) integrity mechanism allowing a certificate and private key forgery. Impact Summary: An attacker impersonating a user can cause a service reading PKCS#12 files to accept forged certificates and private keys with a 1 in 256 probability. If a service accepting PKCS#12 files is using passwords for authenticating the received files, the attacker can create unencrypted PKCS#12 files that use PBMAC1 authentication that specifies an HMAC key of only one byte, allowing them to craft a file that will be accepted with a 1 in 256 probability. That would then cause the service to accept a certificate and private key controlled by the attacker. The FIPS modules are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

References

Affected packages

Ubuntu:25.10
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=questing

Affected ranges

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

Affected versions

2025.*
2025.02-3ubuntu2
2025.02-8
2025.02-8ubuntu1
2025.02-8ubuntu2
2025.02-8ubuntu3
2025.02-8ubuntu3.1
2025.02-8ubuntu3.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "efi-shell-aa64",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "efi-shell-arm",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "efi-shell-ia32",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "efi-shell-loongarch64",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "efi-shell-riscv64",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "efi-shell-x64",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "ovmf",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "ovmf-ia32",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "ovmf-inteltdx",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "ovmf-legacy",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "qemu-efi-arm",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "qemu-efi-loongarch64",
            "binary_version": "2025.02-8ubuntu3.2"
        },
        {
            "binary_name": "qemu-efi-riscv64",
            "binary_version": "2025.02-8ubuntu3.2"
        }
    ],
    "priority_reason": "OpenSSL developers have rated this as being low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34181.json"
openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.5.3-1ubuntu3.4

Affected versions

3.*
3.4.1-1ubuntu3
3.5.0-2ubuntu1
3.5.2-1ubuntu1
3.5.3-1ubuntu2
3.5.3-1ubuntu3
3.5.3-1ubuntu3.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssl3t64",
            "binary_version": "3.5.3-1ubuntu3.4"
        },
        {
            "binary_name": "openssl",
            "binary_version": "3.5.3-1ubuntu3.4"
        },
        {
            "binary_name": "openssl-provider-legacy",
            "binary_version": "3.5.3-1ubuntu3.4"
        }
    ],
    "priority_reason": "OpenSSL developers have rated this as being low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34181.json"
Ubuntu:26.04:LTS
edk2

Package

Name
edk2
Purl
pkg:deb/ubuntu/edk2?arch=source&distro=resolute

Affected ranges

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

Affected versions

2025.*
2025.02-8ubuntu3
2025.11-3ubuntu6
2025.11-3ubuntu7
2025.11-3ubuntu7.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "efi-shell-aa64",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "efi-shell-loongarch64",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "efi-shell-riscv64",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "efi-shell-x64",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "ovmf",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "ovmf-amdsev",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "ovmf-generic",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "ovmf-inteltdx",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "ovmf-legacy",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "qemu-efi-loongarch64",
            "binary_version": "2025.11-3ubuntu7.2"
        },
        {
            "binary_name": "qemu-efi-riscv64",
            "binary_version": "2025.11-3ubuntu7.2"
        }
    ],
    "priority_reason": "OpenSSL developers have rated this as being low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34181.json"
edk2-hwe

Package

Name
edk2-hwe
Purl
pkg:deb/ubuntu/edk2-hwe?arch=source&distro=resolute

Affected ranges

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

Affected versions

2025.*
2025.11-3ubuntu6
2025.11-3ubuntu8
2025.11-3ubuntu8.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "efi-shell-aa64-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "efi-shell-loongarch64-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "efi-shell-riscv64-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "efi-shell-x64-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "ovmf-amdsev-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "ovmf-generic-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "ovmf-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "ovmf-inteltdx-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "ovmf-legacy-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "qemu-efi-aarch64-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "qemu-efi-loongarch64-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        },
        {
            "binary_name": "qemu-efi-riscv64-hwe",
            "binary_version": "2025.11-3ubuntu8.2"
        }
    ],
    "priority_reason": "OpenSSL developers have rated this as being low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34181.json"
openssl

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.5.5-1ubuntu3.2

Affected versions

3.*
3.5.3-1ubuntu2
3.5.5-1ubuntu1
3.5.5-1ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssl3t64",
            "binary_version": "3.5.5-1ubuntu3.2"
        },
        {
            "binary_name": "openssl",
            "binary_version": "3.5.5-1ubuntu3.2"
        },
        {
            "binary_name": "openssl-provider-legacy",
            "binary_version": "3.5.5-1ubuntu3.2"
        }
    ],
    "priority_reason": "OpenSSL developers have rated this as being low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34181.json"
Ubuntu:Pro:22.04:LTS
nodejs

Package

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

Affected ranges

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

Affected versions

12.*
12.22.5~dfsg-5ubuntu1
12.22.7~dfsg-2ubuntu1
12.22.7~dfsg-2ubuntu3
12.22.9~dfsg-1ubuntu2
12.22.9~dfsg-1ubuntu3
12.22.9~dfsg-1ubuntu3.1
12.22.9~dfsg-1ubuntu3.2
12.22.9~dfsg-1ubuntu3.3
12.22.9~dfsg-1ubuntu3.4
12.22.9~dfsg-1ubuntu3.5
12.22.9~dfsg-1ubuntu3.6
12.22.9~dfsg-1ubuntu3.6+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnode72",
            "binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
        },
        {
            "binary_name": "nodejs",
            "binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
        }
    ],
    "priority_reason": "OpenSSL developers have rated this as being low severity"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34181.json"