# CVE-2018-10935: Denial of service in 389-ds-base

> An attacker can crash the 389 Directory Server by sending a crafted ldapsearch request with server-side sort, causing a denial of service.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:** 11 Sep 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-10935, GHSA-f8xp-r7x3-274c, UBUNTU-CVE-2018-10935

## What is CVE-2018-10935?

CVE-2018-10935 is a medium-severity denial of service vulnerability in Red Hat 389-ds-base, published on 11 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A flaw was found in the 389 Directory Server that allows users to cause a crash in the LDAP server using ldapsearch with server side sort.

Weakness: CWE-20 (Improper Input Validation), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2018-10935?

It affects 1 product.


Products: Redhat 389 Directory Server.

## How do I fix CVE-2018-10935?

Apply the vendor's patch.

## Is CVE-2018-10935 being exploited?

There is no known exploitation of CVE-2018-10935 in the wild and no public exploit code.

## Other vulnerabilities in Red Hat 389-ds-base

- [CVE-2026-11770](https://insights.sbomify.com/CVE-2026-11770/): 389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check (high 7.5)
- [CVE-2026-15722](https://insights.sbomify.com/CVE-2026-15722/): Memory corruption in Red Hat Directory Server 11.5 E4S for RHEL 8 (high 7.5)
- [CVE-2026-9064](https://insights.sbomify.com/CVE-2026-9064/): Denial of service in Red Hat Directory Server 11.5 E4S for RHEL 8 (high 7.5)
- [CVE-2010-2222](https://insights.sbomify.com/CVE-2010-2222/): Null dereference in Red Hat Directory Server (high 7.5)
- [CVE-2026-11611](https://insights.sbomify.com/CVE-2026-11611/): 389-ds-base: 389-ds-base: content sync plugin unbounded queue growth and race conditions (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-10935 and fix it if it is affected.

What it is: CVE-2018-10935 is a medium-severity denial of service vulnerability in Red Hat 389-ds-base, published on 11 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-10935 in the wild and no public exploit code.

Affected product: Red Hat 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-2018-10935/ (Markdown: https://insights.sbomify.com/CVE-2018-10935/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-10935
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-10935
- OSV: https://osv.dev/vulnerability/CVE-2018-10935

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-10935/
Summaries are generated and may contain mistakes; the official description above is the record.