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FreeBSD UFS Integer Overflow Vulnerabilities
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Secunia Advisory:
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SA22736
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Release Date:
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2006-11-06
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Last Update:
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2006-11-16
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Popularity:
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9,143 views
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Critical:
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Less critical
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Impact:
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Privilege escalation
DoS
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Where:
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Local system
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Solution Status:
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Unpatched
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| OS: | FreeBSD 6.x
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| CVE reference: | CVE-2006-5679
CVE-2006-5824
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Description:
LMH has reported some vulnerabilities in FreeBSD, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or gain escalated privileges.
The vulnerabilities are caused due to integer overflows within the "ffs_mountfs()" and "ffs_rdextattr()" functions. This can be exploited to crash the kernel or possibly execute arbitrary code by mounting a specially crafted UFS image.
The vulnerabilities are reported in FreeBSD 6.1. Other versions may also be affected.
Solution:
Allow only trusted users to mount UFS images.
Provided and/or discovered by:
LMH
Changelog:
2006-11-08: Added CVE reference.
2006-11-09: Added vulnerability in the "ffs_rdextattr()" function.
2006-11-16: Added CVE reference.
Original Advisory:
http://projects.info-pull.com/mokb/MOKB-03-11-2006.html
http://projects.info-pull.com/mokb/MOKB-08-11-2006.html
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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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