CVE-2000-1124

IBM AIX 4.3.x - Local Privilege Escalation via piobe Command Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2000-1124. PoCs published by Last Stage of Delirium.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in the piobe program on AIX systems (versions 4.1, 4.2, 4.3, and 4.3.x) by manipulating environment variables (PIOSTATUSFILE, PIOTITLE, PIOVARDIR) to overwrite stack variables and execute arbitrary shellcode, leading to local privilege escalation.

Description

Buffer overflow in piobe command in IBM AIX 4.3.x allows local users to gain privileges via long environmental variables.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Last Stage of Delirium · clocalaix
https://www.exploit-db.com/exploits/20455

This exploit targets a buffer overflow vulnerability in the piobe program on AIX systems (versions 4.1, 4.2, 4.3, and 4.3.x) by manipulating environment variables (PIOSTATUSFILE, PIOTITLE, PIOVARDIR) to overwrite stack variables and execute arbitrary shellcode, leading to local privilege escalation.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: IBM AIX piobe (versions 4.1, 4.2, 4.3, 4.3.x)
No auth needed
Prerequisites: Local access to the AIX system · piobe binary must be present and executable
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/2037
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=97569466809056&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/5616
Various Sources vendor-advisory x_refsource_aixapar
http://www-1.ibm.com/support/search.wss?rs=0&q=IY12638&apar=only

Scores

EPSS 0.0089
EPSS Percentile 54.7%

Details

Status published
Products (4)
ibm/aix 4.3
ibm/aix 4.3.1
ibm/aix 4.3.2
ibm/aix 4.3.3
Published Jan 09, 2001
Tracked Since Feb 18, 2026