Alt-N MDaemon 6.0/6.0.5/6.0.6/6.0.7 POP3 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Alt-N MDaemon 6.0/6.0.5/6.0.6/6.0.7. The affected element is an unknown function of the component POP3. Such manipulation leads to denial of service. This vulnerability is referenced as CVE-2002-1539. It is possible to launch the attack remotely. Furthermore, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Alt-N MDaemon 6.0/6.0.5/6.0.6/6.0.7 (Mail Server Software) and classified as critical. Affected by this issue is an unknown functionality of the component POP3. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

Buffer overflow in MDaemon POP server 6.0.7 and earlier allows remote authenticated users to cause a denial of service via long (1) DELE or (2) UIDL arguments.

The bug was discovered 10/27/2002. The weakness was published 04/28/2003 by D4rkGr3y (Website). The advisory is available at dhgroup.org. This vulnerability is handled as CVE-2002-1539. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The exploit is available 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 155 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 11570 (MDaemon POP Server Multiple Command Remote Overflow DoS), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 74129 (Alt-N MDaemon POP Server Buffer Overflow Vulnerability).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at altn.com. The best possible mitigation is suggested to be upgrading to the latest version. Attack attempts may be identified with Snort ID 2122. In this case the pattern UIDL is used for detection.

The vulnerability is also documented in the databases at X-Force (10488), Exploit-DB (21965), Tenable (11570), SecurityFocus (BID 6053†) and OSVDB (12047†). Similar entry is available at VDB-51. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: 11570
Nessus Name: MDaemon POP Server Multiple Command Remote Overflow DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: altn.com

Snort ID: 2122
Snort Message: POP3 UIDL negative argument attempt
Snort Class: 🔍
Snort Pattern: 🔍

Suricata ID: 2102121
Suricata Class: 🔍
Suricata Message: 🔍
SourceFire IPS: 🔍

Timelineinfo

10/27/2002 🔍
10/27/2002 +0 days 🔍
10/28/2002 +1 days 🔍
03/31/2003 +154 days 🔍
04/28/2003 +28 days 🔍
04/28/2003 +0 days 🔍
05/05/2003 +7 days 🔍
10/16/2003 +164 days 🔍
04/09/2004 +175 days 🔍
09/05/2025 +7819 days 🔍

Sourcesinfo

Vendor: altn.com

Advisory: dhgroup.org
Researcher: D4rkGr3y
Status: Confirmed

CVE: CVE-2002-1539 (🔍)
GCVE (CVE): GCVE-0-2002-1539
GCVE (VulDB): GCVE-100-50
X-Force: 10488 - MDaemon DELE or UIDL command denial of service, Medium Risk
SecurityFocus: 6053 - Alt-N MDaemon POP Server Buffer Overflow Vulnerability
OSVDB: 12047 - MDaemon POP Server Multiple Command Remote Overflow DoS
Vulnerability Center: 2488 - Buffer overflow in MDaemon POP Server, Medium

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

Entryinfo

Created: 04/28/2003 02:00
Updated: 09/05/2025 03:31
Changes: 04/28/2003 02:00 (90), 06/25/2019 18:40 (3), 04/06/2025 12:00 (21), 09/05/2025 03:31 (2)
Complete: 🔍
Cache ID: 216:D48:103

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

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