NetBSD settimeofday() Lets Certain Local Users Set the Time Backwards
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SecurityTracker Alert ID: 1015454 |
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SecurityTracker URL: http://securitytracker.com/id/1015454
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Jan 9 2006
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Impact:
Modification of system information
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.1 and prior
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Description:
A vulnerability was reported in NetBSD in the settimeofday() function. A local user with certain permissions can set the time backwards.
A local user with securelevel permissions greater than "1" can invoke settimeofday() to cause the clock time to wrap to "Fri Dec 13 20:45:52 UTC 1901" which then allows the user to set any time value. As a result, the local user can move the time backwards.
The vendor credits Markus Vervier from RedTeam Pentesting with reporting this vulnerability.
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Impact:
A local user with securelevel > 1 permissions can set the time backwards.
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Solution:
The vendor has issued a kernel fix.
The vendor's advisory is available at:
ftp://ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2006-002.txt.asc
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Vendor URL: www.netbsd.org/ (Links to External Site)
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Cause:
Access control error
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Message History:
None.
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Source Message Contents
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[Original Message Not Available for Viewing]
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