# CVE-2023-41102: Denial of service in n/a

> Memory leaks in OpenNDS captive portal allow attackers to exhaust system memory, causing a denial of service.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 17 Nov 2023
- **Updated:** 2 Aug 2024
- **Also known as:** DEBIAN-CVE-2023-41102, GHSA-98jh-839r-xp86

## What is CVE-2023-41102?

CVE-2023-41102 is a high-severity denial of service vulnerability in n/a, published on 17 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in the captive portal in OpenNDS before version 10.1.3. It has multiple memory leaks due to not freeing up allocated memory. This may lead to a Denial-of-Service condition due to the consumption of all available memory. Affected OpenNDS before version 10.1.3 fixed in OpenWrt master and OpenWrt 23.05 on 23. November by updating OpenNDS to version 10.2.0.

Weakness: CWE-401 (Missing Release of Memory after Effective Lifetime), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2023-41102?

It affects 1 product.


Products: Opennds Opennds.

## How do I fix CVE-2023-41102?

Upgrade to a fixed version.

## Is CVE-2023-41102 being exploited?

There is no known exploitation of CVE-2023-41102 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-38317](https://insights.sbomify.com/CVE-2023-38317/): Command injection in n/a (critical 9.8)
- [CVE-2023-38318](https://insights.sbomify.com/CVE-2023-38318/): Command injection in n/a (critical 9.8)
- [CVE-2023-38319](https://insights.sbomify.com/CVE-2023-38319/): Command injection in n/a (critical 9.8)
- [CVE-2023-38323](https://insights.sbomify.com/CVE-2023-38323/): Command injection in n/a (critical 9.8)
- [CVE-2023-41101](https://insights.sbomify.com/CVE-2023-41101/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-41102 and fix it if it is affected.

What it is: CVE-2023-41102 is a high-severity denial of service vulnerability in n/a, published on 17 Nov 2023. 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-2023-41102 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-2023-41102/ (Markdown: https://insights.sbomify.com/CVE-2023-41102/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-41102
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-41102
- OSV: https://osv.dev/vulnerability/CVE-2023-41102

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-41102/
Summaries are generated and may contain mistakes; the official description above is the record.