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FreeBSD IPsec Sequence Number Verification Bypass
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Secunia Advisory:
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SA19366
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Release Date:
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2006-03-23
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Popularity:
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8,768 views
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Critical:
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Moderately critical
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Impact:
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Security Bypass
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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 4.x
FreeBSD 5.x
FreeBSD 6.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
A security issue has been reported in FreeBSD, which potentially can be exploited by malicious people to bypass certain security restrictions.
The security issue is caused due to the incorrect update of the sequence number associated with a Security Association in the "fast_ipsec" implementation. This allows certain packets to unconditionally bypass sequence number verification checks.
Successful exploitation allows an attacker to capture IPSec packets and subsequently replay them.
The security issue has been reported in all FreeBSD versions since 4.8-RELEASE.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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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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