Description
GNUnet before SVN revision 2781 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via an empty UDP datagram, possibly involving FIONREAD errors.
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 | gnunet | 0.7.0e-1 | — |
| Debian 13 | gnunet | 0.7.0e-1 | — |
| Debian 12 | gnunet | 0.7.0e-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
- GNUnet 0.7.0d - Empty UDP Packet Remote Denial of Service EDB-1792 · dos · May 15, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 17980 vdb-entry
- https://gnunet.org/svn/GNUnet/ChangeLog
- http://aluigi.altervista.org/adv/gnunetzero-adv.txt
- 20060512 Socket unreachable in GNUnet rev 2780 mailing-list
- 20096 third-party-advisory
- gnunet-udp-dos(26527) vdb-entry
- ADV-2006-1799 vdb-entry
- 907 third-party-advisory