CSM Mail Server 1999-07m/2000-08a HELO Command memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in CSM Mail Server 1999-07m/2000-08a. Affected by this vulnerability is an unknown functionality of the component HELO Command Handler. The manipulation results in memory corruption. This vulnerability is cataloged as CVE-2000-0042. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, was found in CSM Mail Server 1999-07m/2000-08a (Mail Server Software). Affected is an unknown functionality of the component HELO Command Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in CSM mail server allows remote attackers to cause a denial of service or execute commands via a long HELO command.

The weakness was shared 12/29/1999 by Ussr Labs (Website). The advisory is available at securityfocus.com. This vulnerability is traded as CVE-2000-0042. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/19/2025).

The vulnerability scanner Nessus provides a plugin with the ID 10050 (CSM Mail Server MTA 'HELO' DoS), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SMTP problems and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 74039 (CSM Mail Server Buffer Overflow Vulnerability).

Upgrading eliminates this vulnerability. Attack attempts may be identified with Snort ID 1549. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 1048.

The vulnerability is also documented in the databases at X-Force (3760), Tenable (10050), SecurityFocus (BID 895†) and Vulnerability Center (SBV-86†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 10050
Nessus Name: CSM Mail Server MTA 'HELO' DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Snort ID: 1549
Snort Message: SERVER-MAIL HELO overflow attempt
Snort Class: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍

Timelineinfo

12/29/1999 🔍
12/29/1999 +0 days 🔍
12/29/1999 +0 days 🔍
12/29/1999 +0 days 🔍
01/03/2000 +5 days 🔍
10/13/2002 +1014 days 🔍
06/22/2014 +4270 days 🔍
10/19/2025 +4137 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Ussr Labs
Status: Confirmed

CVE: CVE-2000-0042 (🔍)
GCVE (CVE): GCVE-0-2000-0042
GCVE (VulDB): GCVE-100-15114
X-Force: 3760
SecurityFocus: 895 - CSM Mailserver HELO Buffer Overflow Vulnerability
Vulnerability Center: 86 - Buffer Overflow in CSM Mail Server, High

Entryinfo

Created: 06/22/2014 16:37
Updated: 10/19/2025 23:11
Changes: 06/22/2014 16:37 (72), 05/04/2019 21:12 (1), 10/19/2025 23:11 (19)
Complete: 🔍
Cache ID: 216:744:103

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

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