# CVE-2017-2591: Memory corruption in 389-ds-base

> An attacker can trigger an out-of-bounds heap read in the attribute uniqueness plugin, causing a crash of the LDAP service.

- **Severity:** Low 3.7 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/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:** 30 Apr 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2017-2591, GHSA-cmhq-25mx-42j8, MGASA-2017-0028, UBUNTU-CVE-2017-2591

## What is CVE-2017-2591?

CVE-2017-2591 is a low-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 30 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

389-ds-base before version 1.3.6 is vulnerable to an improperly NULL terminated array in the uniqueness_entry_to_config() function in the "attribute uniqueness" plugin of 389 Directory Server. An authenticated, or possibly unauthenticated, attacker could use this flaw to force an out-of-bound heap memory read, possibly triggering a crash of the LDAP service.

Weakness: CWE-125 (Out-of-bounds Read), CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2017-2591?

It affects 2 products.


Products: Fedoraproject 389 Directory Server, Redhat Enterprise Linux.

## How do I fix CVE-2017-2591?

Upgrade to a fixed version.

## Is CVE-2017-2591 being exploited?

There is no known exploitation of CVE-2017-2591 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2017-7551](https://insights.sbomify.com/CVE-2017-7551/): Information disclosure in 389-ds-base (critical 9.8)
- [CVE-2017-15135](https://insights.sbomify.com/CVE-2017-15135/): Auth bypass in 389-ds-base (high 8.1)
- [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)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-2591 and fix it if it is affected.

What it is: CVE-2017-2591 is a low-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 30 Apr 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-2017-2591 in the wild and no public exploit code.

Affected product: Redhat Enterprise 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-2017-2591/ (Markdown: https://insights.sbomify.com/CVE-2017-2591/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-2591
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-2591
- OSV: https://osv.dev/vulnerability/CVE-2017-2591

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-2591/
Summaries are generated and may contain mistakes; the official description above is the record.