# CVE-2023-4154: Samba: ad dc password exposure to privileged users and rodcs

> Samba's DirSync flaw allows privileged users and RODCs to access all domain secrets, including passwords, bypassing intended security restrictions.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Nov 2023
- **Updated:** 2 Aug 2024
- **Also known as:** ALPINE-CVE-2023-4154, AZL-31955, AZL-37026, DEBIAN-CVE-2023-4154, ECHO-366e-1e8f-df2c, GHSA-v5f6-rpxq-xvg8, UBUNTU-CVE-2023-4154

## What is CVE-2023-4154?

CVE-2023-4154 is a high-severity vulnerability in Samba Samba, published on 7 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in Active Directory to privileged users and Read-Only Domain Controllers (RODCs). This flaw allows RODCs and users possessing the GET_CHANGES right to access all attributes, including sensitive secrets and passwords. Even in a default setup, RODC DC accounts, which should only replicate some passwords, can gain access to all domain secrets, including the vital krbtgt, effectively eliminating the RODC / DC distinction. Furthermore, the vulnerability fails to account for error conditions (fail open), like out-of-memory situations, potentially granting access to secret attributes, even under low-privileged attacker influence.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-4154?

It affects 1 product.


Products: Samba Samba.

## How do I fix CVE-2023-4154?

Apply the vendor's patch.

## Is CVE-2023-4154 being exploited?

There is no known exploitation of CVE-2023-4154 in the wild and no public exploit code.

## Other vulnerabilities in Samba Samba

- [CVE-2012-1182](https://insights.sbomify.com/CVE-2012-1182/): Integer overflow in n/a (critical 10.0)
- [CVE-2007-2446](https://insights.sbomify.com/CVE-2007-2446/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0600](https://insights.sbomify.com/CVE-2004-0600/): Memory corruption in n/a (critical 10.0)
- [CVE-1999-0810](https://insights.sbomify.com/CVE-1999-0810/): Denial of service in n/a (critical 10.0)
- [CVE-1999-0182](https://insights.sbomify.com/CVE-1999-0182/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4154 and fix it if it is affected.

What it is: CVE-2023-4154 is a high-severity vulnerability in Samba Samba, published on 7 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-4154 in the wild and no public exploit code.

Affected product: Samba Samba. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-4154/ (Markdown: https://insights.sbomify.com/CVE-2023-4154/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4154
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4154
- OSV: https://osv.dev/vulnerability/CVE-2023-4154

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4154/
Summaries are generated and may contain mistakes; the official description above is the record.