# CVE-2017-15638: Auth bypass in n/a

> Remote attackers can bypass access restrictions on the portmap service due to missing source network restrictions in SuSEfirewall2.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 9 Nov 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-v93v-g9vq-9v7p, SUSE-SU-2017:2923-1, SUSE-SU-2017:2932-1, SUSE-SU-2017:2935-1

## What is CVE-2017-15638?

CVE-2017-15638 is a medium-severity authentication bypass vulnerability in n/a, published on 9 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The SuSEfirewall2 package before 3.6.312-2.13.1 in SUSE Linux Enterprise (SLE) Desktop 12 SP2, Server 12 SP2, and Server for Raspberry Pi 12 SP2; before 3.6.312.333-3.10.1 in SLE Desktop 12 SP3 and Server 12 SP3; before 3.6_SVNr208-2.18.3.1 in SLE Server 11 SP4; before 3.6.312-5.9.1 in openSUSE Leap 42.2; and before 3.6.312.333-7.1 in openSUSE Leap 42.3 might allow remote attackers to bypass intended access restrictions on the portmap service by leveraging a missing source net restriction for _rpc_ services.

## Which versions are affected by CVE-2017-15638?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `SuSEfirewall2` | SUSE:Linux Enterprise Desktop 12 SP2 | All versions | 3.6.312-2.13.1 |
| `SuSEfirewall2` | SUSE:Linux Enterprise Desktop 12 SP3 | All versions | 3.6.312.333-3.10.1 |
| `SuSEfirewall2` | SUSE:Linux Enterprise Server 11 SP4 | All versions | 3.6_SVNr208-2.18.3.1 |
| `SuSEfirewall2` | SUSE:Linux Enterprise Server 12 SP2 | All versions | 3.6.312-2.13.1 |
| `SuSEfirewall2` | SUSE:Linux Enterprise Server 12 SP3 | All versions | 3.6.312.333-3.10.1 |
| `SuSEfirewall2` | SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 | All versions | 3.6.312-2.13.1 |
| `SuSEfirewall2` | SUSE:Linux Enterprise Server for SAP Applications 11 SP4 | All versions | 3.6_SVNr208-2.18.3.1 |
| `SuSEfirewall2` | SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 3.6.312-2.13.1 |
| `SuSEfirewall2` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 3.6.312.333-3.10.1 |

Products: Suse Susefirewall2.

## How do I fix CVE-2017-15638?

Apply the vendor's patch.

## Is CVE-2017-15638 being exploited?

There is no known exploitation of CVE-2017-15638 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-15638 and fix it if it is affected.

What it is: CVE-2017-15638 is a medium-severity authentication bypass vulnerability in n/a, published on 9 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-15638 in the wild and no public exploit code.

Affected product: n/a. 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-2017-15638/ (Markdown: https://insights.sbomify.com/CVE-2017-15638/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-15638
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-15638
- OSV: https://osv.dev/vulnerability/CVE-2017-15638

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-15638/
Summaries are generated and may contain mistakes; the official description above is the record.