Microsoft Exchange 5.5 Mail Connector EHLO memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Exchange 5.5 and classified as critical. This affects an unknown function of the component Mail Connector. Performing a manipulation of the argument EHLO results in memory corruption. This vulnerability is cataloged as CVE-2002-0698. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Exchange 5.5 (Groupware Software). It has been classified as critical. This affects an unknown part of the component Mail Connector. The manipulation of the argument EHLO 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. The summary by CVE is:

Buffer overflow in Internet Mail Connector (IMC) for Microsoft Exchange Server 5.5 allows remote attackers to execute arbitrary code via an EHLO request from a system with a long name as obtained through a reverse DNS lookup, which triggers the overflow in IMC s hello response.

The weakness was shared 08/12/2002 with ISS X-Force as MS02-037 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. This vulnerability is uniquely identified as CVE-2002-0698. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 11053 (MS02-037: Microsoft Exchange EHLO Long Hostname Overflow), 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 74122 (Microsoft Exchange Server IMC EHLO Response Buffer Overflow Vulnerability (MS02-037)).

Applying the patch MS02-037 is able to eliminate this problem. The bugfix is ready for download at microsoft.com.

The vulnerability is also documented in the databases at X-Force (9658), Tenable (11053), SecurityFocus (BID 5306†) and Vulnerability Center (SBV-888†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: 11053
Nessus Name: MS02-037: Microsoft Exchange EHLO Long Hostname Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 11053
OpenVAS Name: IMC SMTP EHLO Buffer Overrun
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS02-037

Timelineinfo

07/25/2002 🔍
07/29/2002 +4 days 🔍
08/12/2002 +14 days 🔍
08/12/2002 +0 days 🔍
08/12/2002 +0 days 🔍
02/09/2003 +181 days 🔍
07/22/2014 +4181 days 🔍
09/14/2025 +4072 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS02-037
Organization: ISS X-Force
Status: Confirmed

CVE: CVE-2002-0698 (🔍)
GCVE (CVE): GCVE-0-2002-0698
GCVE (VulDB): GCVE-100-18609
X-Force: 9658
SecurityFocus: 5306 - Microsoft Exchange Server IMC EHLO Response Buffer Overflow Vulnerability
Vulnerability Center: 888 - [MS02-037] Buffer Overflow in Microsoft Exchange Server IMC EHLO Response Allows Arbitrary Code Exec, High

Entryinfo

Created: 07/22/2014 22:42
Updated: 09/14/2025 12:43
Changes: 07/22/2014 22:42 (72), 05/09/2019 11:09 (3), 09/14/2025 12:43 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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