# CVE-2023-23902: Memory corruption in UR32L

> A buffer overflow in the login functionality allows remote attackers to execute arbitrary code via a crafted network request.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/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:** No
- **Published:** 6 Jul 2023
- **Updated:** 14 Nov 2024
- **Also known as:** GHSA-qpc6-5f38-pmpq

## What is CVE-2023-23902?

CVE-2023-23902 is a critical memory corruption vulnerability in Milesight Ur32l Firmware, published on 6 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A buffer overflow vulnerability exists in the uhttpd login functionality of Milesight UR32L v32.3.0.5. A specially crafted network request can lead to remote code execution. An attacker can send a network request to trigger this vulnerability.

Weakness: CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2023-23902?

It affects 1 product.


Products: Milesight Ur32l Firmware.

## How do I fix CVE-2023-23902?

No fix has been published for CVE-2023-23902 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-23902 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-23902 exists.

## Other vulnerabilities in Milesight Ur32l Firmware

- [CVE-2023-47166](https://insights.sbomify.com/CVE-2023-47166/): Missing authorization in UR32L (high 8.8)
- [CVE-2023-22299](https://insights.sbomify.com/CVE-2023-22299/): Command injection in UR32L (high 8.8)
- [CVE-2023-22653](https://insights.sbomify.com/CVE-2023-22653/): Command injection in UR32L (high 8.8)
- [CVE-2023-24018](https://insights.sbomify.com/CVE-2023-24018/): Memory corruption in UR32L (high 8.8)
- [CVE-2023-24519](https://insights.sbomify.com/CVE-2023-24519/): Command injection in UR32L (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-23902 and fix it if it is affected.

What it is: CVE-2023-23902 is a critical memory corruption vulnerability in Milesight Ur32l Firmware, published on 6 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-23902 exists.

Affected product: Milesight Ur32l Firmware. 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-2023-23902/ (Markdown: https://insights.sbomify.com/CVE-2023-23902/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-23902
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-23902
- OSV: https://osv.dev/vulnerability/CVE-2023-23902

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-23902/
Summaries are generated and may contain mistakes; the official description above is the record.