CVE-1999-0321

Solaris - Buffer Overflow in kcms_configure Command

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-1999-0321. PoCs published by UNYUN, Cheez Whiz.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in the setuid root binary `/usr/openwin/bin/kcms_configure` on Solaris 2.5, 2.5.1, and 2.6. It leverages an unchecked `sprintf()` call to overflow a buffer and execute arbitrary code with root privileges.

Description

Buffer overflow in Solaris kcms_configure command allows local users to gain root access.

Exploits (2)

exploitdb WORKING POC VERIFIED
by UNYUN · clocalsolaris
https://www.exploit-db.com/exploits/19342

This exploit targets a buffer overflow vulnerability in the setuid root binary `/usr/openwin/bin/kcms_configure` on Solaris 2.5, 2.5.1, and 2.6. It leverages an unchecked `sprintf()` call to overflow a buffer and execute arbitrary code with root privileges.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Solaris 2.5, 2.5.1, 2.6 (kcms_configure)
No auth needed
Prerequisites: Access to a vulnerable Solaris system · Ability to compile and execute the exploit code
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by Cheez Whiz · clocalsolaris
https://www.exploit-db.com/exploits/19341

This exploit targets a buffer overflow vulnerability in Solaris 2.5, 2.5.1, and 2.6 via an unchecked sprintf() call in the setuid root binary /usr/openwin/bin/kcms_configure. It uses shellcode to execute arbitrary commands with root privileges.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Solaris 2.5, 2.5.1, 2.6 /usr/openwin/bin/kcms_configure
No auth needed
Prerequisites: Local access to the vulnerable Solaris system · Presence of the vulnerable /usr/openwin/bin/kcms_configure binary
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0321

Scores

EPSS 0.0089
EPSS Percentile 54.7%

Details

Status published
Products (1)
sun/solaris
Published Dec 01, 1998
Tracked Since Feb 18, 2026