Mcdu FSD 2.052 D9/3.000 D9 Help Function sysuser.cc sysuser::exechelp memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

A vulnerability classified as critical was found in Mcdu FSD 2.052 D9/3.000 D9. Affected by this vulnerability is the function sysuser::exechelp of the file sysuser.cc of the component Help Function. The manipulation 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 stack-based buffer overflows in FSD 2.052 d9 and earlier, and FSFDT FSD 3.000 d9 and earlier, allow (1) remote attackers to execute arbitrary code via a long HELP command on TCP port 3010 to the sysuser::exechelp function in sysuser.cc and (2) remote authenticated users to execute arbitrary code via long commands on TCP port 6809 to the servinterface::sendmulticast function in servinterface.cc, as demonstrated by a PIcallsign command.

The weakness was published 10/06/2007 by Luigi Auriemma (Website). It is possible to read the advisory at vupen.com. This vulnerability is known as CVE-2007-5256 since 10/06/2007. 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.

It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept.

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 vulnerability database at Exploit-DB (4484).

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/01/2007 🔍
10/02/2007 +0 days 🔍
10/06/2007 +4 days 🔍
10/06/2007 +0 days 🔍
10/06/2007 +0 days 🔍
03/16/2015 +2718 days 🔍
09/09/2018 +1273 days 🔍

Sourcesinfo

Advisory: vupen.com⛔
Researcher: Luigi Auriemma
Status: Not defined

CVE: CVE-2007-5256 (🔍)
SecurityFocus: 25883 - FSD Exechelp And Execmulticast Multiple Remote Buffer Overflow Vulnerabilities
Secunia: 27008 - FSD Two Buffer Overflow Vulnerabilities, Highly Critical
Vupen: ADV-2007-3334

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

Entryinfo

Created: 03/16/2015 12:18
Updated: 09/09/2018 11:45
Changes: 03/16/2015 12:18 (53), 09/09/2018 11:45 (9)
Complete: 🔍

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