VDB-16042 · CVE-2000-1021 · XFDB 5250

Alt-N MDaemon 3.1.1 WebConfig URL memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Alt-N MDaemon 3.1.1. This issue affects some unknown processing of the component WebConfig. Executing a manipulation as part of URL can lead to memory corruption. This vulnerability is tracked as CVE-2000-1021. Moreover, an exploit is present. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Alt-N MDaemon 3.1.1 (Mail Server Software) and classified as critical. This vulnerability affects an unknown code block of the component WebConfig. The manipulation as part of a URL leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Heap overflow in WebConfig in Mdaemon 3.1.1 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long URL.

The weakness was disclosed 12/11/2000 with VIGILANTe (Website). The advisory is available at marc.theaimsgroup.com. This vulnerability was named CVE-2000-1021. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Perl. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86023 (Alt-N MDaemon 3.1.1 DoS Vulnerability).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (5250), Exploit-DB (20225), SecurityFocus (BID 1689†) and Vulnerability Center (SBV-1598†). The entry VDB-16041 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Mail Server Software

Vendor

Alt-N

Name

MDaemon

Version

3.1.1

License

free

Website

Vendor: https://www.altn.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/18/2000 🔍
12/11/2000 +84 days 🔍
12/11/2000 +0 days 🔍
06/30/2014 +4949 days 🔍
02/01/2025 +3869 days 🔍

Sourcesinfo

Vendor: altn.com

Advisory: marc.theaimsgroup.com
Organization: VIGILANTe
Status: Confirmed

CVE: CVE-2000-1021 (🔍)
GCVE (CVE): GCVE-0-2000-1021
GCVE (VulDB): GCVE-100-16042
X-Force: 5250 - Alt-N Mdaemon URL denial of service
SecurityFocus: 1689 - Alt-N MDaemon 3.1.1 DoS Vulnerability
Vulnerability Center: 1598

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

Entryinfo

Created: 06/30/2014 16:52
Updated: 02/01/2025 15:49
Changes: 06/30/2014 16:52 (56), 05/28/2018 09:11 (7), 06/17/2024 22:22 (17), 02/01/2025 15:49 (4)
Complete: 🔍
Cache ID: 216:BE0:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.