Description
The ftp_syst function in ftp-basic.c in Free Software Foundation (FSF) GNU wget 1.10.2 allows remote attackers to cause a denial of service (application crash) via a malicious FTP server with a large number of blank 220 responses to the SYST 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 14 | wget | 1.13-1 | — |
| Debian 13 | wget | 1.13-1 | — |
| Debian 12 | wget | 1.13-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | wget | 1.21.1-2.2 | openSUSE-SU-2024:11510-1 |
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
- wget 1.10.2 - Unchecked Boundary Condition Denial of Service EDB-2947 · dos · Dec 18, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- openSUSE-SU-2024:11510-1 wget-1.21.1-2.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://issues.rpath.com/browse/RPL-930
- 21650 vdb-entry
- 2947 exploit
- MDKSA-2007:017 vendor-advisory