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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | eggdrop | 1.6.19-1.2 | — |
| Debian 13 | eggdrop | 1.6.19-1.2 | — |
| Debian 12 | eggdrop | 1.6.19-1.2 | — |
| Debian 5.0 | eggdrop | 1.6.19-1.1+lenny1 | DSA-1826-1 |
| Debian 4.0 | eggdrop | 1.6.18-1etch2 | DSA-1826-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Eggdrop/Windrop 1.6.19 - ctcpbuf Remote Crash EDB-8695 · dos · May 15, 2009 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-1826-1 eggdrop - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- eggdrop-servmsg-dos(50547) vdb-entry
- 35104 third-party-advisory
- 54460 vdb-entry
- 20090515 eggdrop/windrop remote crash vulnerability mailing-list
- ADV-2009-1340 vdb-entry
- FEDORA-2009-5572 vendor-advisory
- 8695 exploit
- http://cvs.eggheads.org/viewvc/viewvc.cgi/eggdrop1.6/doc/Changes1.6?revision=1.20&view=markup
- 35690 third-party-advisory
- 20090514 eggdrop/windrop remote crash vulnerability mailing-list
- MDVSA-2009:126 vendor-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=528778
- 34985 vdb-entry
- FEDORA-2009-5568 vendor-advisory
- 35158 third-party-advisory
- DSA-1826 vendor-advisory