CVE-2000-1121

IBM AIX - Buffer Overflow via enq Command -M Argument

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2000-1121. PoCs published by watercloud.

AI-analyzed exploit summary This exploit targets a buffer overflow in the AIX 'enq' program to achieve local privilege escalation (LPE) by overwriting stack variables. It generates a malicious payload using Perl and executes it via environment variables to gain an egid=9 shell.

Description

Buffer overflow in enq command in IBM AIX 4.3.x and earlier may allow local users to execute arbitrary commands via a long -M argument.

Exploits (1)

exploitdb WORKING POC VERIFIED
by watercloud · bashlocalaix
https://www.exploit-db.com/exploits/20454

This exploit targets a buffer overflow in the AIX 'enq' program to achieve local privilege escalation (LPE) by overwriting stack variables. It generates a malicious payload using Perl and executes it via environment variables to gain an egid=9 shell.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: IBM AIX 4.x (tested on 4.3.3)
No auth needed
Prerequisites: Access to an AIX 4.x system with the 'enq' binary present · Ability to execute shell scripts
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Various Sources vendor-advisory x_refsource_aixapar
http://www-1.ibm.com/support/search.wss?rs=0&q=IY08287&apar=only
Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/2034
Various Sources vendor-advisory x_refsource_aixapar
http://www-1.ibm.com/support/search.wss?rs=0&q=IY08143&apar=only
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/5619

Scores

EPSS 0.0099
EPSS Percentile 58.0%

Details

Status published
Products (6)
ibm/aix 4.2
ibm/aix 4.2.1
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