CVE-2002-1021

BadBlue - Unauthenticated Arbitrary File Read via Hex-Encoded Null Byte

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2002-1021. PoCs published by Matthew Murphy.

AI-analyzed exploit summary This exploit demonstrates an information leakage vulnerability in BadBlue by appending a null byte to a file request, bypassing file extension restrictions to access sensitive files like the configuration file.

Description

BadBlue server allows remote attackers to read restricted files, such as EXT.INI, via an HTTP request that contains a hex-encoded null byte.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Matthew Murphy · textremotewindows
https://www.exploit-db.com/exploits/21616

This exploit demonstrates an information leakage vulnerability in BadBlue by appending a null byte to a file request, bypassing file extension restrictions to access sensitive files like the configuration file.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: BadBlue P2P file sharing application
No auth needed
Prerequisites: Network access to a BadBlue server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Vendor Advisory vdb-entry x_refsource_xf
http://www.iss.net/security_center/static/9557.php
Exploit, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/5226
Third Party Advisory mailing-list x_refsource_bugtraq
http://archives.neohapsis.com/archives/bugtraq/2002-07/0143.html

Scores

EPSS 0.0322
EPSS Percentile 86.6%

Details

Status published
Products (2)
working_resources_inc./badblue 1.7.3_enterprise
working_resources_inc./badblue 1.7.3_personal
Published Oct 04, 2002
Tracked Since Feb 18, 2026