UBUNTU-CVE-2026-12528

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Source

https://ubuntu.com/security/CVE-2026-12528

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12528.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-12528

Upstream

CVE-2026-12528

Published

2026-06-17T15:16:00Z

Modified

2026-06-29T13:56:27.360862846Z

Severity

5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A flaw was found in 389 Directory Server in the aclpnormalize_acltxt() function of aclparse.c. A malformed ACI (Access Control Instruction) string can trigger heap-buffer-overflow writes and reads during ACI parsing. The function fails to validate that the ACI keyword has sufficient length after whitespace stripping, leading to a 1-byte out-of-bounds write and subsequent out-of-bounds reads. An authenticated user with write access to the aci attribute could send a crafted ACI value to silently corrupt heap memory in the directory server process.

References

Affected packages

Ubuntu:22.04:LTS

389-ds-base

Package

Name: 389-ds-base
Purl: pkg:deb/ubuntu/389-ds-base?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.4.4.11-2build1

1.4.4.11-2build2

1.4.4.17-1

2.*

2.0.11-2

2.0.14-1

2.0.15-1

2.0.15-1ubuntu2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "389-ds",
            "binary_version": "2.0.15-1ubuntu2"
        },
        {
            "binary_name": "389-ds-base",
            "binary_version": "2.0.15-1ubuntu2"
        },
        {
            "binary_name": "389-ds-base-libs",
            "binary_version": "2.0.15-1ubuntu2"
        },
        {
            "binary_name": "cockpit-389-ds",
            "binary_version": "2.0.15-1ubuntu2"
        },
        {
            "binary_name": "python3-lib389",
            "binary_version": "2.0.15-1ubuntu2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12528.json"

Ubuntu:24.04:LTS

389-ds-base

Package

Name: 389-ds-base
Purl: pkg:deb/ubuntu/389-ds-base?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.3.4+dfsg1-1

2.4.4+dfsg1-1ubuntu1

2.4.4+dfsg1-1ubuntu4

2.4.4+dfsg1-3

2.4.5+dfsg1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "389-ds",
            "binary_version": "2.4.5+dfsg1-1"
        },
        {
            "binary_name": "389-ds-base",
            "binary_version": "2.4.5+dfsg1-1"
        },
        {
            "binary_name": "389-ds-base-libs",
            "binary_version": "2.4.5+dfsg1-1"
        },
        {
            "binary_name": "cockpit-389-ds",
            "binary_version": "2.4.5+dfsg1-1"
        },
        {
            "binary_name": "python3-lib389",
            "binary_version": "2.4.5+dfsg1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12528.json"

Ubuntu:25.10

389-ds-base

Package

Name: 389-ds-base
Purl: pkg:deb/ubuntu/389-ds-base?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.2+dfsg1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "389-ds",
            "binary_version": "3.1.2+dfsg1-1"
        },
        {
            "binary_name": "389-ds-base",
            "binary_version": "3.1.2+dfsg1-1"
        },
        {
            "binary_name": "389-ds-base-libs",
            "binary_version": "3.1.2+dfsg1-1"
        },
        {
            "binary_name": "cockpit-389-ds",
            "binary_version": "3.1.2+dfsg1-1"
        },
        {
            "binary_name": "python3-lib389",
            "binary_version": "3.1.2+dfsg1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12528.json"

Ubuntu:26.04:LTS

389-ds-base

Package

Name: 389-ds-base
Purl: pkg:deb/ubuntu/389-ds-base?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.1.2+dfsg1-1

3.1.2+vendor1-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "389-ds",
            "binary_version": "3.1.2+vendor1-2"
        },
        {
            "binary_name": "389-ds-base",
            "binary_version": "3.1.2+vendor1-2"
        },
        {
            "binary_name": "389-ds-base-libs",
            "binary_version": "3.1.2+vendor1-2"
        },
        {
            "binary_name": "cockpit-389-ds",
            "binary_version": "3.1.2+vendor1-2"
        },
        {
            "binary_name": "python3-lib389",
            "binary_version": "3.1.2+vendor1-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12528.json"

Ubuntu:Pro:16.04:LTS

389-ds-base

Package

Name: 389-ds-base
Purl: pkg:deb/ubuntu/389-ds-base?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.3.12-1build1

1.3.3.13-1

1.3.4.5-2

1.3.4.8-1

1.3.4.8-3

1.3.4.8-3ubuntu1

1.3.4.8-4

1.3.4.9-1

1.3.4.9-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "389-ds",
            "binary_version": "1.3.4.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "389-ds-base",
            "binary_version": "1.3.4.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "389-ds-base-libs",
            "binary_version": "1.3.4.9-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12528.json"

Ubuntu:Pro:18.04:LTS

389-ds-base

Package

Name: 389-ds-base
Purl: pkg:deb/ubuntu/389-ds-base?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.7.5-1

1.3.7.5-1build1

1.3.7.5-1build2

1.3.7.9-1

1.3.7.10-1

1.3.7.10-1ubuntu1

1.3.7.10-1ubuntu1+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "389-ds",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
        },
        {
            "binary_name": "389-ds-base",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
        },
        {
            "binary_name": "389-ds-base-libs",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
        },
        {
            "binary_name": "python3-dirsrvtests",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
        },
        {
            "binary_name": "python3-lib389",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12528.json"

Ubuntu:Pro:20.04:LTS

389-ds-base

Package

Name: 389-ds-base
Purl: pkg:deb/ubuntu/389-ds-base?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.4.1.6-4

1.4.1.6-4build1

1.4.2.4-1

1.4.2.4-1build1

1.4.3.2-1

1.4.3.2-1build1

1.4.3.6-2

1.4.3.6-2ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "389-ds",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "389-ds-base",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "389-ds-base-libs",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "cockpit-389-ds",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "python3-lib389",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12528.json"