Description
Multiple buffer overflows in the HandleChild function in server.c in Greylisting daemon (GLD) 1.3 and 1.4, when GLD is listening on a network interface, allow remote attackers to execute arbitrary code.
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 | postfix-gld | 1.5-1 | — |
| Debian 13 | postfix-gld | 1.5-1 | — |
| Debian 12 | postfix-gld | 1.5-1 | — |
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.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
-
GLD (Greylisting Daemon) Postfix Buffer Overflow
exploit/linux/misc/gld_postfix
Exploit-DB 3
- Salim Gasmi GLD (Greylisting Daemon) - Postfix Buffer Overflow (Metasploit) EDB-16841 · remote · Jul 3, 2010 · verified
- Salim Gasmi GLD (Greylisting Daemon) 1.0 < 1.4 - Postfix Greylisting Buffer Overflow (Metasploit) EDB-10023 · remote · Apr 12, 2005 · verified
- Salim Gasmi GLD (Greylisting Daemon) 1.x - Postfix Greylisting Daemon Buffer Overflow EDB-25392 · remote · Apr 12, 2005 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 1013678 vdb-entry
- 15492 vdb-entry
- GLSA-200504-10 vendor-advisory
- http://www.gasmi.net/down/gld-history
- gld-serverc-bo(20066) vdb-entry
- 14941 third-party-advisory
- 20050412 GLD (Greylisting daemon for Postfix) multiple vulnerabilities. mailing-list
- 20050413 Gld 1.5 released (security fix) mailing-list