Bigantsoft Bigant Messenger 2.50 AntServer.exe memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
9.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Bigantsoft Bigant Messenger 2.50. This affects an unknown function of the file AntServer.exe. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2009-4660. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Bigantsoft Bigant Messenger 2.50 (Messaging Software). This issue affects an unknown code of the file AntServer.exe. The manipulation 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 confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in the AntServer Module (AntServer.exe) in BigAnt IM Server 2.50 allows remote attackers to execute arbitrary code via a long GET request to TCP port 6660.

The weakness was shared 03/03/2010 (Website). The advisory is shared at milw0rm.com. The identification of this vulnerability is CVE-2009-4660 since 03/03/2010. 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 as well as a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/01/2026).

A public exploit has been developed by blake in Python and been published even before and not after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 169 days. During that time the estimated underground price was around $0-$5k.

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 Exploit-DB (9673), SecurityFocus (BID 36407†) and Secunia (SA36704†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 9.4

VulDB Base Score: 10.0
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
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: 🔍
Access: Public
Status: Proof-of-Concept
Author: blake
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 100278
OpenVAS Name: BigAnt IM Server HTTP GET Request Buffer Overflow Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/15/2009 🔍
09/15/2009 +0 days 🔍
09/15/2009 +0 days 🔍
09/16/2009 +1 days 🔍
03/03/2010 +168 days 🔍
03/03/2010 +0 days 🔍
03/03/2010 +0 days 🔍
03/18/2015 +1841 days 🔍
05/01/2026 +4062 days 🔍

Sourcesinfo

Advisory: milw0rm.com⛔
Status: Confirmed

CVE: CVE-2009-4660 (🔍)
GCVE (CVE): GCVE-0-2009-4660
GCVE (VulDB): GCVE-100-52049
SecurityFocus: 36407 - BigAnt IM Server HTTP GET Request Buffer Overflow Vulnerability
Secunia: 36704 - BigAnt Messenger AntServer Module Buffer Overflow Vulnerability, Highly Critical
Vupen: ADV-2009-2679

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

Entryinfo

Created: 03/18/2015 15:15
Updated: 05/01/2026 14:41
Changes: 03/18/2015 15:15 (57), 12/27/2017 09:13 (12), 12/15/2024 01:53 (16), 05/01/2026 14:41 (1)
Complete: 🔍
Cache ID: 216::103

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

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