Monkey HTTP Daemon up to 0.5.0 POST Request method.c Post_Method Content-Length input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Monkey HTTP Daemon up to 0.5.0. This vulnerability affects the function Post_Method of the file method.c of the component POST Request Handler. The manipulation of the argument Content-Length results in input validation. This vulnerability was named CVE-2002-1663. In addition, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Monkey HTTP Daemon up to 0.5.0 (Web Server). Affected is the function Post_Method of the file method.c of the component POST Request Handler. The manipulation of the argument Content-Length with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

The Post_Method function in method.c for Monkey HTTP Daemon before 0.5.1 allows remote attackers to cause a denial of service (crash) via a POST request with an invalid or missing Content-Length header value.

The bug was discovered 10/31/2002. The weakness was presented 12/31/2002 as confirmed posting (Bugtraq). The advisory is shared for download at archives.neohapsis.com. This vulnerability is traded as CVE-2002-1663 since 05/19/2005. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 61 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 11924 (Monkey HTTP Daemon (monkeyd) Post_Method Function Crafted Content-Length Header DoS), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86552 (Monkey HTTP Daemon Missing Content-Length Field Denial of Service Vulnerability).

Upgrading to version 0.5.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (10529), Exploit-DB (21981), Tenable (11924), SecurityFocus (BID 6096†) and OSVDB (20824†). See VDB-20429 and VDB-21147 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 11924
Nessus Name: Monkey HTTP Daemon (monkeyd) Post_Method Function Crafted Content-Length Header DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 11924
OpenVAS Name: POST with empty Content-Length
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: HTTP Daemon 0.5.1

Timelineinfo

10/31/2002 🔍
10/31/2002 +0 days 🔍
10/31/2002 +0 days 🔍
11/02/2002 +2 days 🔍
12/31/2002 +59 days 🔍
12/31/2002 +0 days 🔍
11/13/2003 +317 days 🔍
05/19/2005 +553 days 🔍
08/09/2005 +82 days 🔍
08/04/2014 +3282 days 🔍
09/02/2025 +4047 days 🔍

Sourcesinfo

Advisory: archives.neohapsis.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2002-1663 (🔍)
GCVE (CVE): GCVE-0-2002-1663
GCVE (VulDB): GCVE-100-19308
X-Force: 10529 - Monkey HTTP Daemon malformed HTTP POST denial of service
SecurityFocus: 6096 - Monkey HTTP Server Invalid POST Request Denial Of Service Vulnerability
Secunia: 7449
OSVDB: 20824 - CVE-2002-1663 - Monkey HTTP Daemon - Denial-Of-Service Issue
SecurityTracker: 1005507
Vulnerability Center: 8889 - DoS in Monkey HTTP Daemon < 0.5.1 via Missing Content-Length Value, High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/04/2014 11:44
Updated: 09/02/2025 11:18
Changes: 08/04/2014 11:44 (85), 06/08/2019 10:11 (3), 04/26/2025 22:25 (25), 09/02/2025 11:18 (2)
Complete: 🔍
Cache ID: 216:7F8:103

Once again VulDB remains the best source for vulnerability data.

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