# CVE-2017-2619: Race condition in samba

> A malicious client can exploit a symlink race condition to access unauthorized files on the Samba server file system.

- **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:** 12 Mar 2018
- **Updated:** 17 Sep 2024
- **Also known as:** ALPINE-CVE-2017-2619, DEBIAN-CVE-2017-2619, DLA-894-1, DSA-3816-1, ECHO-d748-4f34-4fd4, GHSA-gpq8-xrm8-w2qr, SUSE-RU-2017:1217-1, SUSE-RU-2017:1218-1, SUSE-RU-2017:1219-1, SUSE-SU-2017:0841-1, SUSE-SU-2017:0858-1, SUSE-SU-2017:0859-1, SUSE-SU-2017:0862-1, SUSE-SU-2017:1216-1, UBUNTU-CVE-2017-2619, USN-3242-1

## What is CVE-2017-2619?

CVE-2017-2619 is a high-severity vulnerability in Debian Debian Linux, published on 12 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Samba before versions 4.6.1, 4.5.7 and 4.4.11 are vulnerable to a malicious client using a symlink race to allow access to areas of the server file system not exported under the share definition.

Weakness: CWE-59 (Improper Link Resolution Before File Access), CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization)

## Which versions are affected by CVE-2017-2619?

It affects 3 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `samba` | SUSE:Linux Enterprise Desktop 12 SP1 | All versions | 4.2.4-28.11.1 |
| `samba` | SUSE:Linux Enterprise Desktop 12 SP1 | All versions | 4.2.4-28.8.2 |
| `samba` | SUSE:Linux Enterprise Desktop 12 SP2 | All versions | 4.2.4-28.11.1 |
| `samba` | SUSE:Linux Enterprise Desktop 12 SP2 | All versions | 4.2.4-28.8.2 |
| `samba` | SUSE:Linux Enterprise Desktop 12 SP2 | All versions | 4.4.2-36.2 |
| `samba` | SUSE:Linux Enterprise Desktop 12 SP2 | All versions | 4.4.2-38.3.1 |
| `samba` | SUSE:Linux Enterprise High Availability Extension 12 | All versions | 4.2.4-18.35.1 |
| `samba` | SUSE:Linux Enterprise High Availability Extension 12 SP1 | All versions | 4.2.4-28.11.1 |
| `samba` | SUSE:Linux Enterprise High Availability Extension 12 SP1 | All versions | 4.2.4-28.8.2 |
| `samba` | SUSE:Linux Enterprise High Availability Extension 12 SP2 | All versions | 4.4.2-36.2 |
| `samba` | SUSE:Linux Enterprise High Availability Extension 12 SP2 | All versions | 4.4.2-38.3.1 |
| `samba` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 3.6.3-90.1 |
| `samba-doc` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 3.6.3-90.1 |
| `samba` | SUSE:Linux Enterprise Server 11 SP3-LTSS | All versions | 3.6.3-90.1 |
| `samba-doc` | SUSE:Linux Enterprise Server 11 SP3-LTSS | All versions | 3.6.3-90.1 |
| `samba` | SUSE:Linux Enterprise Server 11 SP3-TERADATA | All versions | 3.6.3-90.1 |
| `samba-doc` | SUSE:Linux Enterprise Server 11 SP3-TERADATA | All versions | 3.6.3-90.1 |
| `samba` | SUSE:Linux Enterprise Server 11 SP4 | All versions | 3.6.3-87.1 |
| `samba` | SUSE:Linux Enterprise Server 11 SP4 | All versions | 3.6.3-90.1 |
| `samba-doc` | SUSE:Linux Enterprise Server 11 SP4 | All versions | 3.6.3-87.1 |
| `samba-doc` | SUSE:Linux Enterprise Server 11 SP4 | All versions | 3.6.3-90.1 |
| `samba` | SUSE:Linux Enterprise Server 12 SP1 | All versions | 4.2.4-28.11.1 |
| `samba` | SUSE:Linux Enterprise Server 12 SP1 | All versions | 4.2.4-28.8.2 |
| `samba` | SUSE:Linux Enterprise Server 12 SP2 | All versions | 4.2.4-28.11.1 |
| `samba` | SUSE:Linux Enterprise Server 12 SP2 | All versions | 4.2.4-28.8.2 |
| `samba` | SUSE:Linux Enterprise Server 12 SP2 | All versions | 4.4.2-36.2 |
| `samba` | SUSE:Linux Enterprise Server 12 SP2 | All versions | 4.4.2-38.3.1 |
| `samba` | SUSE:Linux Enterprise Server 12-LTSS | All versions | 4.2.4-18.35.1 |
| `samba` | SUSE:Linux Enterprise Server 12-LTSS | All versions | 4.2.4-18.38.1 |
| `samba` | SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 | All versions | 4.2.4-28.11.1 |
| `samba` | SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 | All versions | 4.2.4-28.8.2 |
| `samba` | SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 | All versions | 4.4.2-36.2 |
| `samba` | SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 | All versions | 4.4.2-38.3.1 |
| `samba` | SUSE:Linux Enterprise Server for SAP Applications 11 SP4 | All versions | 3.6.3-87.1 |
| `samba` | SUSE:Linux Enterprise Server for SAP Applications 11 SP4 | All versions | 3.6.3-90.1 |
| `samba-doc` | SUSE:Linux Enterprise Server for SAP Applications 11 SP4 | All versions | 3.6.3-87.1 |
| `samba-doc` | SUSE:Linux Enterprise Server for SAP Applications 11 SP4 | All versions | 3.6.3-90.1 |
| `samba` | SUSE:Linux Enterprise Server for SAP Applications 12 | All versions | 4.2.4-18.35.1 |
| `samba` | SUSE:Linux Enterprise Server for SAP Applications 12 | All versions | 4.2.4-18.38.1 |
| `samba` | SUSE:Linux Enterprise Server for SAP Applications 12 SP1 | All versions | 4.2.4-28.11.1 |

Products: Debian Debian Linux, Redhat Enterprise Linux, Samba Samba.

## How do I fix CVE-2017-2619?

Upgrade to a fixed version.

## Is CVE-2017-2619 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-2619 exists.

Public exploit code:

- Samba 4.5.2 - Symlink Race Permits Opening Files Outside Share Directory (exploitdb)

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-2619 and fix it if it is affected.

What it is: CVE-2017-2619 is a high-severity vulnerability in Debian Debian Linux, published on 12 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-2619 exists.

Affected product: Debian Debian Linux. 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-2017-2619/ (Markdown: https://insights.sbomify.com/CVE-2017-2619/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-2619
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-2619
- OSV: https://osv.dev/vulnerability/CVE-2017-2619

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-2619/
Summaries are generated and may contain mistakes; the official description above is the record.
