VDB-1631 · SA16097 · OSVDB 18070

Alt-N MDaemon up to 8.0.3 IMAP Server Authenticate denial of service

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.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Alt-N MDaemon up to 8.0.3. It has been rated as critical. This vulnerability affects unknown code of the component IMAP Server. The manipulation of the argument Authenticate leads to denial of service. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to apply restrictive firewalling.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Alt-N MDaemon up to 8.0.3 (Mail Server Software). This issue affects an unknown function of the component IMAP Server. The manipulation of the argument AUTHENTICATE 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.

The weakness was released 07/19/2005 by kcope (Website). It is possible to read the advisory at secunia.com. The attack may be initiated remotely. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

After before and not just, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 8.10 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at altn.com.Addressing this vulnerability is possible by firewalling . The best possible mitigation is suggested to be applying a restrictive firewalling. Attack attempts may be identified with Snort ID 2107.

The vulnerability is also documented in the databases at OSVDB (18070†), Secunia (SA16097†) and SecurityTracker (ID 1014520†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Mail Server Software

Vendor

Alt-N

Name

MDaemon

Version

License

free

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.5
VulDB Temp Score: 6.0
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: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Upgrade: MDaemon 8.10
Patch: altn.com

Snort ID: 2107

Timelineinfo

07/18/2005 🔍
07/19/2005 +1 days 🔍
07/19/2005 +0 days 🔍
07/19/2005 +0 days 🔍
07/25/2005 +5 days 🔍
07/03/2019 +5091 days 🔍

Sourcesinfo

Vendor: altn.com

Advisory: secunia.com⛔
Researcher: kcope
Status: Not defined

GCVE (VulDB): GCVE-100-1631
Secunia: 16097 - MDaemon IMAP Authentication Denial of Service Vulnerability, Moderately Critical
OSVDB: 18070 - MDaemon IMAP Multiple AUTHENTICATE Commands Remote Overflow
SecurityTracker: 1014520

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

Entryinfo

Created: 07/25/2005 11:33
Updated: 07/03/2019 16:52
Changes: 07/25/2005 11:33 (62), 07/03/2019 16:52 (1)
Complete: 🔍
Cache ID: 216::103