DEBIAN-CVE-2026-12528

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Source

https://security-tracker.debian.org/tracker/CVE-2026-12528

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12528.json

JSON Data

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

Upstream

CVE-2026-12528

Published

2026-06-17T15:16:44Z

Modified

2026-09-14T17:01:51Z

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

Summary

[none]

Details

A flaw was found in 389 Directory Server in the __aclp__normalize_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

https://security-tracker.debian.org/tracker/CVE-2026-12528

Affected packages

Debian:12 / 389-ds-base

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.3.1+dfsg1-1

2.3.1+dfsg1-1+deb12u1

2.3.4+dfsg1-1

2.3.4+dfsg1-1.1

2.4.4+dfsg1-1

2.4.4+dfsg1-3

2.4.5+dfsg1-1

3.*

3.0.2+dfsg1-1

3.1.1+dfsg1-1

3.1.1+dfsg1-2

3.1.1+dfsg1-3

3.1.2+dfsg1-1

3.1.2+vendor1-1

3.1.2+vendor1-2

3.3.0-1

3.3.0-2

3.3.1-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12528.json"

Debian:13 / 389-ds-base