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FreeBSD "i386_get_ldt()" Kernel Memory Disclosure Vulnerability
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Secunia Advisory:
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SA15261
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Release Date:
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2005-05-06
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Popularity:
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7,412 views
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Critical:
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Less critical
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Impact:
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Exposure of sensitive information
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| OS: | FreeBSD 4.x
FreeBSD 5.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| | CVE reference: | CVE-2005-1400
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Description:
Christer Oberg has reported a vulnerability in FreeBSD, which can be exploited by malicious, local users to gain knowledge of potentially sensitive information.
The vulnerability is caused due to an input validation error in the "i386_get_ldt()" system call and can be exploited to copy arbitrary portions of data from kernel space into userland by passing negative or extremely large arguments to the system call.
Solution:
Update FreeBSD or apply patch.
Fixed versions:
2005-05-06 02:40:19 UTC (RELENG_5, 5.4-STABLE)
2005-05-06 02:40:49 UTC (RELENG_5_4, 5.4-RELEASE)
2005-05-06 02:40:32 UTC (RELENG_5_3, 5.3-RELEASE-p12)
2005-05-06 02:39:35 UTC (RELENG_4, 4.11-STABLE)
2005-05-06 02:40:05 UTC (RELENG_4_11, 4.11-RELEASE-p6)
2005-05-06 02:39:52 UTC (RELENG_4_10, 4.10-RELEASE-p11)
Patch for FreeBSD 4.x:
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:07/ldt4.patch
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:07/ldt4.patch.asc
Patch for FreeBSD 5.x:
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:07/ldt5.patch
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-05:07/ldt5.patch.asc
Provided and/or discovered by:
Christer Oberg
Original Advisory:
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:07.ldt.asc
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About this Secunia Advisory
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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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