Description
The ip_evictor function in ip_fragment.c in libnids before 1.24, as used in dsniff and possibly other products, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via crafted fragmented packets.
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 | libnids | 1.23-1.2 | — |
| Debian 13 | libnids | 1.23-1.2 | — |
| Debian 12 | libnids | 1.23-1.2 | — |
References
- FEDORA-2010-5562 vendor-advisory
- FEDORA-2010-5535 vendor-advisory
- 39225 third-party-advisory
- ADV-2010-0791 vdb-entry
- FEDORA-2010-5545 vendor-advisory
- 39142 vdb-entry
- ADV-2010-0777 vdb-entry
- http://freefr.dl.sourceforge.net/project/libnids/libnids/1.24/libnids-1.24.releasenotes.txt
- http://xorl.wordpress.com/2010/04/04/libnids-ip-fragmentation-remote-null-pointer-dereference/
- libnids-ipfragment-dos(57428) vdb-entry
- 39249 third-party-advisory