CVE Catalog

CVE-1999-1021

High
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.41%

33th percentile - higher than 33% of all known CVEs

Summary

NFS on SunOS 4.1 through 4.1.2 ignores the high order 16 bits in a 32 bit UID, allowing a local user to gain root access if the lower 16 bits are set to 0.

Risk Assessment

This vulnerability poses a serious security risk by allowing local users to gain unauthorized access to the administrator account.

Recommendation

It is recommended to apply the NFS jumbo patch to fix this vulnerability and secure the system against unauthorized access.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS