Description
The glob implementation in Pure-FTPd before 1.0.32, and in libc in NetBSD 5.1, does not properly expand expressions containing curly brackets, which allows remote authenticated users to cause a denial of service (memory consumption) via a crafted FTP STAT command.
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 13 | pure-ftpd | 1.0.32-1 | — |
| Debian 12 | pure-ftpd | 1.0.32-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pure-ftpd | 1.0.43-1.3 | openSUSE-SU-2024:10318-1 |
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.
Exploit-DB 1
- FreeBSD 9.1 - 'ftpd' Remote Denial of Service EDB-24450 · dos · Feb 5, 2013
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- openSUSE-SU-2024:10318-1 pure-ftpd-1.0.43-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gen/glob.c#rev1.28
- ADV-2011-1273 vdb-entry
- MDVSA-2011:094 vendor-advisory
- http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gen/glob.c.diff?r1=1.27&r2=1.28&f=h
- https://bugzilla.redhat.com/show_bug.cgi?id=704283
- 47671 vdb-entry
- 20110502 Multiple Vendors libc/glob(3) GLOB_BRACE|GLOB_LIMIT memory exhaustion third-party-advisory
- 8228 third-party-advisory
- http://www.pureftpd.org/project/pure-ftpd/news