# CVE-2023-28505: Buffer overflow in UniRPC library function

> A buffer overflow in Rocket Software UniData and UniVerse allows authenticated attackers to execute arbitrary code or escalate privileges.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Mar 2023
- **Updated:** 18 Feb 2025
- **Also known as:** GHSA-3wm7-5h33-f92f

## What is CVE-2023-28505?

CVE-2023-28505 is a high-severity memory corruption vulnerability in Rocket Software UniData, published on 29 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1 build 2002 suffer from a buffer overflow in an API function, where a string is copied into a caller-provided buffer without checking the length. This requires a valid login to exploit.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2023-28505?

It affects 2 products.


Products: Rocketsoftware Unidata, Rocketsoftware Universe.

## How do I fix CVE-2023-28505?

No fix has been published for CVE-2023-28505 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-28505 being exploited?

There is no known exploitation of CVE-2023-28505 in the wild and no public exploit code.

## Other vulnerabilities in Rocket Software UniData

- [CVE-2023-28501](https://insights.sbomify.com/CVE-2023-28501/): Heap buffer overflow in unirpcd (critical 9.8)
- [CVE-2023-28502](https://insights.sbomify.com/CVE-2023-28502/): Stack buffer overflow in UniRPC's udadmin_server service (critical 9.8)
- [CVE-2023-28503](https://insights.sbomify.com/CVE-2023-28503/): Authentication bypass in UniRPC's udadmin service (critical 9.8)
- [CVE-2023-28504](https://insights.sbomify.com/CVE-2023-28504/): Stack buffer overflow in UniRPC library function (critical 9.8)
- [CVE-2023-28507](https://insights.sbomify.com/CVE-2023-28507/): Memory exhaustion in LZ4 decompression in UniRPC daemon (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28505 and fix it if it is affected.

What it is: CVE-2023-28505 is a high-severity memory corruption vulnerability in Rocket Software UniData, published on 29 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-28505 in the wild and no public exploit code.

Affected product: Rocket Software UniData. 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-2023-28505/ (Markdown: https://insights.sbomify.com/CVE-2023-28505/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28505
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28505
- OSV: https://osv.dev/vulnerability/CVE-2023-28505

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-28505/
Summaries are generated and may contain mistakes; the official description above is the record.