CVE-2001-1185

FreeBSD 4.4 - Local Privilege Escalation via AIO Operations

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2001-1185. PoCs published by David Rufino.

AI-analyzed exploit summary This exploit leverages a vulnerability in FreeBSD's AIO implementation where pending reads persist through execve, allowing arbitrary memory overwrite in a suid process. It uses socket pairs and aio_read to inject shellcode into the GOT of a target binary, achieving local privilege escalation.

Description

Some AIO operations in FreeBSD 4.4 may be delayed until after a call to execve, which could allow a local user to overwrite memory of the new process and gain privileges.

Exploits (1)

exploitdb WORKING POC VERIFIED

by David Rufino · clocalfreebsd

https://www.exploit-db.com/exploits/21176

View Code ZIP pw:eip

This exploit leverages a vulnerability in FreeBSD's AIO implementation where pending reads persist through execve, allowing arbitrary memory overwrite in a suid process. It uses socket pairs and aio_read to inject shellcode into the GOT of a target binary, achieving local privilege escalation.

Classification

Working Poc 95%

Attack Type

Lpe

Complexity

Moderate

Reliability

Reliable

Target: FreeBSD with VFS_AIO kernel option enabled (4.4-STABLE up to at least 28th October 2001)

No auth needed

Prerequisites: FreeBSD system with VFS_AIO kernel option enabled · Local user access · Target suid binary with known GOT address

MITRE ATT&CK

T1068 - Exploitation for Privilege Escalation T1203 - Exploitation for Client Execution

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4

Core References

Vendor Advisory vdb-entry x_refsource_xf

http://www.iss.net/security_center/static/7693.php

Vendor Advisory mailing-list x_refsource_bugtraq

http://www.securityfocus.com/archive/1/244583

Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/3661

Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb

http://www.osvdb.org/2001

Scores

EPSS 0.0081

EPSS Percentile 52.2%

Details

Status published

Products (1)

freebsd/freebsd 4.4

Published Dec 10, 2001

Tracked Since Feb 18, 2026