VDB-126947 · CVE-2018-18756 · EDB-ID 45711

Local Server 1.0.9 Service Port 4008 memory corruption

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.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Local Server 1.0.9. The impacted element is an unknown function of the component Service Port 4008. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2018-18756. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to apply restrictive firewalling.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Local Server 1.0.9. This issue affects some unknown functionality of the component Service Port 4008. 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:

Local Server 1.0.9 has a Buffer Overflow via crafted data on Port 4008.

The bug was discovered 10/29/2018. The weakness was disclosed 11/16/2018 as EDB-ID 45711 as confirmed exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. The identification of this vulnerability is CVE-2018-18756 since 10/28/2018. 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 are unknown but a public exploit is available.

A public exploit has been developed by Ihsan Sencan and been published even before and not after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 18 days. During that time the estimated underground price was around $0-$5k.

Addressing this vulnerability is possible by firewalling 4008.

The vulnerability is also documented in the vulnerability database at Exploit-DB (45711). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Local Server

Version

1.0.9

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.3
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: Ihsan Sencan
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

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: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

10/28/2018 🔍
10/29/2018 +1 days 🔍
10/29/2018 +0 days 🔍
10/29/2018 +0 days 🔍
11/16/2018 +18 days 🔍
11/16/2018 +0 days 🔍
11/17/2018 +1 days 🔍
04/13/2020 +513 days 🔍