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FreeBSD ipfw IP Fragment Denial of Service Vulnerability
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Secunia Advisory:
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SA18378
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Release Date:
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2006-01-11
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Popularity:
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7,086 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | FreeBSD 6.x
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| CVE reference: | CVE-2006-0054
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Description:
A vulnerability has been reported in FreeBSD, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error in the "ipfw" module when handling IP fragments. This can be exploited to crash the firewall by sending ICMP IP fragments to the firewall that match any of the "reset", "reject" or "unreach" actions.
The vulnerability has been reported in FreeBSD 6.0-RELEASE.
Solution:
Update FreeBSD or apply patch.
Fixed versions:
2006-01-11 08:02:16 UTC (RELENG_6, 6.0-STABLE)
2006-01-11 08:03:18 UTC (RELENG_6_0, 6.0-RELEASE-p2)
Patch for FreeBSD 6.0:
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-06:04/ipfw.patch
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-06:04/ipfw.patch.asc
Provided and/or discovered by:
Reported by vendor.
Original Advisory:
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:04.ipfw.asc
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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