UBUNTU-CVE-2026-14570

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Source
https://ubuntu.com/security/CVE-2026-14570
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14570.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-14570
Upstream
Published
2026-07-05T02:17:00Z
Modified
2026-07-09T15:15:46Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery. "Crypt::DSA::Util::makerandom forces the high bit of every value it returns to obtain an exactly N-bit integer for prime search. The signing nonce and the private key are drawn from makerandom. Because the high bit is always set, the result is not uniform: its top bit is fixed, producing insecure values." An attacker who collects a modest number of signatures under an affected key, together with the public key, can recover the private key with a lattice attack. Keys used to sign with an affected version should be considered compromised and new keys should be generated.

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-2026-14570.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-2026-14570.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-2026-14570.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-2026-14570.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-2026-14570.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-2026-14570.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-2026-14570.json"