National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-1999-1021 Detail


NFS on SunOS 4.1 through 4.1.2 ignores the high order 16 bits in a 32 bit UID, which allows a local user to gain root access if the lower 16 bits are set to 0, as fixed by the NFS jumbo patch upgrade.

Source:  MITRE      Last Modified:  12/30/1992

Quick Info

CVE Dictionary Entry:
Original release date:
Last revised:


CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.2 HIGH
(AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore:
Exploitability Subscore:
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Not required to exploit
Impact Type:
Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name Patch External Source SUN 00117 Patch; Third Party Advisory; US Government Resource External Source CERT CA-1992-15 Patch; Vendor Advisory External Source BID 47 External Source XF nfs-uid(82)

Technical Details

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Change History 3 change records found - show changes