CVE-2004-0511

SCO OpenServer 5.0.6-5.0.7 - Denial of Service via MMDF Null Dereference

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2004-0511. PoCs published by Ramon de C Valle.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in SCO OpenServer 5.0.7's MMDF deliver utility. It constructs a malicious payload with NOP sleds and shellcode to spawn a root shell (/bin/ksh) by overflowing the buffer via the '-c' argument.

Description

Multiple unknown vulnerabilities in MMDF on OpenServer 5.0.6 and 5.0.7, and possibly other operating systems, may allow attackers to cause a denial of service by triggering a null dereference.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Ramon de C Valle · clocalsco
https://www.exploit-db.com/exploits/24293

This exploit targets a buffer overflow vulnerability in SCO OpenServer 5.0.7's MMDF deliver utility. It constructs a malicious payload with NOP sleds and shellcode to spawn a root shell (/bin/ksh) by overflowing the buffer via the '-c' argument.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: SCO OpenServer 5.0.7 MMDF deliver
No auth needed
Prerequisites: Local access to the vulnerable system · Presence of /usr/mmdf/bin/deliver with setuid privileges
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/16739
Patch, Vendor Advisory vendor-advisory x_refsource_sco
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2004.7/SCOSA-2004.7.txt
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/10758

Scores

EPSS 0.0095
EPSS Percentile 56.7%

Details

Status published
Products (3)
sco/openserver 5.0.6
sco/openserver 5.0.6a
sco/openserver 5.0.7
Published Dec 23, 2004
Tracked Since Feb 18, 2026