eMule Client OP_SERVERMESSAGE format string

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	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.
5.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in eMule Client. Impacted is an unknown function of the component OP_SERVERMESSAGE. The manipulation results in format string. Furthermore, an exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in eMule Client (version unknown). Affected is an unknown function of the component OP_SERVERMESSAGE. The manipulation with an unknown input leads to a format string vulnerability. CWE is classifying the issue as CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 08/17/2003 by Stefan Esser with eMatters (Website). The advisory is shared for download at security.e-matters.de. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Rémi Denis-Courmont in ANSI C and been published 3 weeks after the advisory. The exploit is shared for download 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 databases at Exploit-DB (90), SecurityFocus (BID 8443†), OSVDB (2443†) and Secunia (SA9553†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• eMule

Name

• Client

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Rémi Denis-Courmont
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

08/17/2003 🔍
08/17/2003 +0 days 🔍
08/19/2003 +1 days 🔍
09/01/2003 +12 days 🔍
09/01/2003 +0 days 🔍
04/11/2016 +4606 days 🔍
10/01/2018 +903 days 🔍

Sourcesinfo

Advisory: security.e-matters.de
Researcher: Stefan Esser
Organization: eMatters
Status: Confirmed

GCVE (VulDB): GCVE-100-81900
SecurityFocus: 8443 - eMule Client OP_SERVERMESSAGE Format String Vulnerability
Secunia: 9553
OSVDB: 2443 - Multiple eMule Client OP_SERVERMESSAGE Remote Format String

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

Entryinfo

Created: 04/11/2016 15:45
Updated: 10/01/2018 10:56
Changes: 04/11/2016 15:45 (40), 10/01/2018 10:56 (14)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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