CVE-1999-1021
First published: Wed Dec 30 1992(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Sun SunOS | =4.1 | |
| Sun SunOS | =4.1.1 | |
| Sun SunOS | =4.1.2 | |
| =4.1 | ||
| =4.1.1 | ||
| =4.1.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-1999-1021?
CVE-1999-1021 is a high severity vulnerability that allows local users to gain root access.
How do I fix CVE-1999-1021?
To fix CVE-1999-1021, apply the NFS jumbo patch upgrade which mitigates the vulnerability.
Who is affected by CVE-1999-1021?
CVE-1999-1021 affects users of SunOS versions 4.1, 4.1.1, and 4.1.2.
What are the consequences of exploiting CVE-1999-1021?
Exploitation of CVE-1999-1021 can lead to unauthorized root access, compromising system security.
Is CVE-1999-1021 still a threat today?
CVE-1999-1021 primarily affects outdated systems, but if still in use, it poses a significant threat.
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