CVE-2004-1897

Monit 1.4-4.2 - Denial of Service via Basic Authentication Request Without Password

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2004-1897. PoCs published by Abhisek Datta.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in Monit <= 4.2 by sending a maliciously crafted HTTP request with an overly long Base64-encoded Basic Authentication header. The payload includes shellcode to spawn a bind shell on port 31337.

Description

Administration interface in Monit 1.4 through 4.2 allows remote attackers to cause a denial of service (segmentation fault) by sending a Basic Authentication request without a password, which causes Monit to decrement a null pointer and perform an out-of-bounds read.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Abhisek Datta · cremotelinux
https://www.exploit-db.com/exploits/174

This exploit targets a buffer overflow vulnerability in Monit <= 4.2 by sending a maliciously crafted HTTP request with an overly long Base64-encoded Basic Authentication header. The payload includes shellcode to spawn a bind shell on port 31337.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Monit <= 4.2
No auth needed
Prerequisites: Network access to the Monit service · Monit service running with vulnerable version
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Various Sources x_refsource_misc
http://www.tildeslash.com/monit/changes.html
Exploit, Patch vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/10051
Various Sources x_refsource_confirm
http://www.tildeslash.com/monit/secadv_20040305.txt
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=108119149103696&w=2
Patch third-party-advisory x_refsource_secunia
http://secunia.com/advisories/11304
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/15734

Scores

EPSS 0.0867
EPSS Percentile 94.4%

Details

Status published
Published Dec 31, 2004
Tracked Since Feb 18, 2026