UBUNTU-CVE-2026-12205

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Source
https://ubuntu.com/security/CVE-2026-12205
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12205.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-12205
Upstream
Published
2026-06-15T23:16:00Z
Modified
2026-06-24T11:01:17.193602483Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery. Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it. The first sign() on a Key object picks a nonce, and every later sign() on that same object reuses it, producing an identical "r". Keys used to sign more than once with an affected version should be considered compromised.

References

Affected packages

Ubuntu:16.04:LTS
libcrypt-dsa-perl

Package

Name
libcrypt-dsa-perl
Purl
pkg:deb/ubuntu/libcrypt-dsa-perl?arch=source&distro=xenial

Affected ranges

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

Affected versions

1.*
1.17-3
1.17-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcrypt-dsa-perl",
            "binary_version": "1.17-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12205.json"
Ubuntu:18.04:LTS
libcrypt-dsa-perl

Package

Name
libcrypt-dsa-perl
Purl
pkg:deb/ubuntu/libcrypt-dsa-perl?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.17-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcrypt-dsa-perl",
            "binary_version": "1.17-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12205.json"
Ubuntu:20.04:LTS
libcrypt-dsa-perl

Package

Name
libcrypt-dsa-perl
Purl
pkg:deb/ubuntu/libcrypt-dsa-perl?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.17-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcrypt-dsa-perl",
            "binary_version": "1.17-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12205.json"
Ubuntu:22.04:LTS
libcrypt-dsa-perl

Package

Name
libcrypt-dsa-perl
Purl
pkg:deb/ubuntu/libcrypt-dsa-perl?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.17-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcrypt-dsa-perl",
            "binary_version": "1.17-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12205.json"
Ubuntu:24.04:LTS
libcrypt-dsa-perl

Package

Name
libcrypt-dsa-perl
Purl
pkg:deb/ubuntu/libcrypt-dsa-perl?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.17-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcrypt-dsa-perl",
            "binary_version": "1.17-5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12205.json"
Ubuntu:25.10
libcrypt-dsa-perl

Package

Name
libcrypt-dsa-perl
Purl
pkg:deb/ubuntu/libcrypt-dsa-perl?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.19-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcrypt-dsa-perl",
            "binary_version": "1.19-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12205.json"
Ubuntu:26.04:LTS
libcrypt-dsa-perl

Package

Name
libcrypt-dsa-perl
Purl
pkg:deb/ubuntu/libcrypt-dsa-perl?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.19-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcrypt-dsa-perl",
            "binary_version": "1.19-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12205.json"