SurfControl Superscout Email Filter 3.5.1 SMTP Proxy HELO/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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5.3$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in SurfControl Superscout Email Filter 3.5.1. The impacted element is an unknown function of the component SMTP Proxy. The manipulation of the argument HELO/RCPT TO leads to memory corruption. This vulnerability is listed as CVE-2002-2121. There is no available exploit.

Detailsinfo

A vulnerability was found in SurfControl Superscout Email Filter 3.5.1. It has been rated as critical. This issue affects some unknown functionality of the component SMTP Proxy. The manipulation of the argument HELO/RCPT TO with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

SurfControl SuperScout Email filter for SMTP 3.5.1 allows remote attackers to cause a denial of service (crash) via a long SMTP (1) HELO or (2) RCPT TO command, possibly due to a buffer overflow.

The bug was discovered 03/09/2002. The weakness was presented 12/31/2002 (Website). It is possible to read the advisory at marc.theaimsgroup.com. The identification of this vulnerability is CVE-2002-2121 since 08/05/2005. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 297 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 74097 (SurfControl SuperScout Email Filter Present).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (8424), SecurityFocus (BID 4257†), OSVDB (19780†) and Vulnerability Center (SBV-13548†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

CVSSv2info

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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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/09/2002 🔍
03/09/2002 +0 days 🔍
12/31/2002 +297 days 🔍
12/31/2002 +0 days 🔍
12/31/2002 +0 days 🔍
08/05/2005 +948 days 🔍
12/21/2006 +503 days 🔍
08/06/2014 +2785 days 🔍
08/30/2025 +4042 days 🔍

Sourcesinfo

Advisory: marc.theaimsgroup.com
Status: Not defined

CVE: CVE-2002-2121 (🔍)
GCVE (CVE): GCVE-0-2002-2121
GCVE (VulDB): GCVE-100-19763
X-Force: 8424
SecurityFocus: 4257 - SurfControl Email Filter for SMTP HELO Denial of Service Vulnerability
OSVDB: 19780 - SurfControl - Email Filter for SMTP HELO - Denial of S
Vulnerability Center: 13548 - SurfControl SuperScout Email Filter DoS via Long Commands, Medium

Entryinfo

Created: 08/06/2014 11:45
Updated: 08/30/2025 02:03
Changes: 08/06/2014 11:45 (59), 07/12/2019 14:43 (3), 08/30/2025 02:03 (18)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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