# CVE-2017-15135: Auth bypass in 389-ds-base

> Remote attackers can bypass authentication in 389-ds-base due to flawed hash comparison logic, gaining unauthorized access under specific conditions.

- **Severity:** High 8.1 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 24 Jan 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2017-15135, GHSA-frrc-qvjw-hwj9, MGASA-2018-0193

## What is CVE-2017-15135?

CVE-2017-15135 is a high-severity authentication bypass vulnerability in Red Hat, Inc. 389-ds-base, published on 24 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

It was found that 389-ds-base since 1.3.6.1 up to and including 1.4.0.3 did not always handle internal hash comparison operations correctly during the authentication process. A remote, unauthenticated attacker could potentially use this flaw to bypass the authentication process under very rare and specific circumstances.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2017-15135?

It affects 1 product.


Products: Fedoraproject 389 Directory Server.

## How do I fix CVE-2017-15135?

Apply the vendor's patch.

## Is CVE-2017-15135 being exploited?

There is no known exploitation of CVE-2017-15135 in the wild and no public exploit code.

## Other vulnerabilities in Red Hat, Inc. 389-ds-base

- [CVE-2017-7551](https://insights.sbomify.com/CVE-2017-7551/): Information disclosure in 389-ds-base (critical 9.8)
- [CVE-2019-10171](https://insights.sbomify.com/CVE-2019-10171/): Denial of service in 389-ds-base (high 7.5)
- [CVE-2018-14638](https://insights.sbomify.com/CVE-2018-14638/): Denial of service in 389-ds-base (high 7.5)
- [CVE-2018-1054](https://insights.sbomify.com/CVE-2018-1054/): Denial of service in 389-ds-base (high 7.5)
- [CVE-2017-15134](https://insights.sbomify.com/CVE-2017-15134/): Memory corruption in 389-ds-base (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-15135 and fix it if it is affected.

What it is: CVE-2017-15135 is a high-severity authentication bypass vulnerability in Red Hat, Inc. 389-ds-base, published on 24 Jan 2018. 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-2017-15135 in the wild and no public exploit code.

Affected product: Red Hat, Inc. 389-ds-base. 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-2017-15135/ (Markdown: https://insights.sbomify.com/CVE-2017-15135/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-15135
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-15135
- OSV: https://osv.dev/vulnerability/CVE-2017-15135

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-15135/
Summaries are generated and may contain mistakes; the official description above is the record.