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FreeBSD IPsec AES-XCBC-MAC Authentication Security Issue
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Secunia Advisory:
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SA16244
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Release Date:
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2005-07-27
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Popularity:
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8,465 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 5.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:
Yukiyo Akisada has reported a security issue in FreeBSD, which potentially can be exploited by malicious people to bypass certain security restrictions.
The problem is caused due to an implementation error in IPsec within the AES-XCBC-MAC authentication algorithm, which causes a constant key to be used for authentication instead of the administrator-defined key. This can potentially be exploited to spoof authentication packets from other IP addresses and bypass any IP-based access controls on the vulnerable system.
Successful exploitation requires encryption to be disabled.
The security issue has been reported in versions 5.3 and 5.4.
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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