FreeBSD IPFW IP Fragment Remote Denial Of Service Vulnerability

BID:16209

Info

FreeBSD IPFW IP Fragment Remote Denial Of Service Vulnerability

Bugtraq ID: 16209
Class: Design Error
CVE: CVE-2006-0054
Remote: Yes
Local: No
Published: Jan 11 2006 12:00AM
Updated: Jan 11 2006 12:00AM
Credit: The vendor disclosed this issue.
Vulnerable: FreeBSD FreeBSD 6.0 -STABLE
FreeBSD FreeBSD 6.0 -RELEASE
Not Vulnerable:

Discussion

FreeBSD IPFW IP Fragment Remote Denial Of Service Vulnerability

FreeBSD's IPFW is susceptible to a remote denial of service vulnerability. This issue is due to a flaw in affected kernels that results in an uninitialized kernel memory access when handling ICMP IP fragments.

This issue allows remote attackers to crash affected kernels, denying further network service to legitimate users.

Exploit / POC

FreeBSD IPFW IP Fragment Remote Denial Of Service Vulnerability

An exploit is not required.

Solution / Fix

FreeBSD IPFW IP Fragment Remote Denial Of Service Vulnerability

Solution:
FreeBSD has released an advisory, along with a patch to address this issue. The FreeBSD-6.0-STABLE CVS tree has had fixes applied since 2006-01-11 08:03:18 UTC. Please see the referenced advisory for further information.


FreeBSD FreeBSD 6.0 -RELEASE

FreeBSD FreeBSD 6.0 -STABLE

References

FreeBSD IPFW IP Fragment Remote Denial Of Service Vulnerability

References:

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