YoungZSoft CMailServer 4.0.2003.23.27 ESMTP Service MAIL FROM/RCPT TO memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in YoungZSoft CMailServer 4.0.2003.23.27 and classified as critical. Affected by this issue is some unknown functionality of the component ESMTP Service. This manipulation of the argument MAIL FROM/RCPT TO causes memory corruption. This vulnerability is tracked as CVE-2003-0280. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in YoungZSoft CMailServer 4.0.2003.23.27 (Mail Server Software). It has been declared as very critical. Affected by this vulnerability is an unknown part of the component ESMTP Service. The manipulation of the argument MAIL FROM/RCPT TO with an unknown input 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. The summary by CVE is:

Multiple buffer overflows in the SMTP Service for ESMTP CMailServer 4.0.2003.03.27 allow remote attackers to execute arbitrary code via long (1) MAIL FROM or (2) RCPT TO commands.

The bug was discovered 05/10/2003. The weakness was disclosed 06/16/2003 by Dennis Rand as not defined posting (Bugtraq). It is possible to read the advisory at marc.theaimsgroup.com. This vulnerability is known as CVE-2003-0280 since 05/12/2003. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/20/2025).

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. The vulnerability was handled as a non-public zero-day exploit for at least 37 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 74139 (Youngzsoft CMailServer MAIL FROM Buffer Overflow Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 1877.

The vulnerability is also documented in the databases at X-Force (11975), Exploit-DB (22582), SecurityFocus (BID 7548†), OSVDB (12075†) and Vulnerability Center (SBV-6323†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.1

VulDB Base Score: 10.0
VulDB Temp Score: 9.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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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: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍

Timelineinfo

05/10/2003 🔍
05/10/2003 +0 days 🔍
05/10/2003 +0 days 🔍
05/12/2003 +2 days 🔍
06/16/2003 +35 days 🔍
06/16/2003 +0 days 🔍
12/08/2004 +541 days 🔍
08/11/2014 +3533 days 🔍
08/20/2025 +4027 days 🔍

Sourcesinfo

Advisory: marc.theaimsgroup.com
Researcher: Dennis Rand
Status: Not defined

CVE: CVE-2003-0280 (🔍)
GCVE (CVE): GCVE-0-2003-0280
GCVE (VulDB): GCVE-100-20527
X-Force: 11975
SecurityFocus: 7548 - Youngzsoft CMailServer RCPT TO Buffer Overflow Vulnerability
OSVDB: 12075 - CMailServer SMTP protocol buffer overflow
Vulnerability Center: 6323 - Multiple Buffer Overflows in YoungZSoft CMailServer Allows Code Execution, High

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

Entryinfo

Created: 08/12/2014 01:02
Updated: 08/20/2025 22:04
Changes: 08/12/2014 01:02 (66), 06/04/2019 15:17 (4), 02/07/2025 02:05 (20), 08/20/2025 22:04 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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