CVE-1999-1021

high

Description

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.

References

Advisories
More

http://www.cert.org/advisories/CA-1992-15.html

http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/117&type=0&nav=sec.sba

https://exchange.xforce.ibmcloud.com/vulnerabilities/82

http://www.securityfocus.com/bid/47

Details

Source: Mitre, NVD

Published: 1992-12-30

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H