SZ NetChat up to 7.8 Options MyName cross site scripting

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.
4.3$0-$5k0.00

Summaryinfo

A vulnerability was found in SZ NetChat up to 7.8. It has been declared as problematic. Affected by this issue is some unknown functionality of the component Options Module. The manipulation of the argument MyName results in cross site scripting. This vulnerability is identified as CVE-2018-20370. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in SZ NetChat up to 7.8 (Chat Software). Affected is some unknown processing of the component Options Module. The manipulation of the argument MyName with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

SZ NetChat before 7.9 has XSS in the MyName input field of the Options module. Attackers are able to inject commands to compromise the enabled HTTP server web frontend.

The bug was discovered 12/10/2018. The weakness was released 12/23/2018 (Website). The advisory is shared for download at vulnerability-lab.com. This vulnerability is traded as CVE-2018-20370 since 12/22/2018. It is possible to launch the attack remotely. Required for exploitation is a authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 7.9 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: NetChat 7.9

Timelineinfo

12/10/2018 🔍
12/22/2018 +12 days 🔍
12/22/2018 +0 days 🔍
12/23/2018 +1 days 🔍
12/23/2018 +0 days 🔍
04/23/2020 +487 days 🔍

Sourcesinfo

Advisory: vulnerability-lab.com
Status: Not defined

CVE: CVE-2018-20370 (🔍)
GCVE (CVE): GCVE-0-2018-20370
GCVE (VulDB): GCVE-100-128316

Entryinfo

Created: 12/23/2018 12:47
Updated: 04/23/2020 15:29
Changes: 12/23/2018 12:47 (60), 04/23/2020 15:29 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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