VDB-129841 · CVE-2018-20731 · Qualys 13395

NeDi up to 1.7Cp2 User-Chat.php Stored cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in NeDi up to 1.7Cp2. It has been classified as problematic. This affects an unknown function of the file User-Chat.php. This manipulation causes cross site scripting (Stored). This vulnerability is handled as CVE-2018-20731. The attack can be initiated remotely. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in NeDi up to 1.7Cp2. It has been declared as problematic. Affected by this vulnerability is an unknown code block of the file User-Chat.php. The manipulation with an unknown input leads to a cross site scripting vulnerability (Stored). The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

A stored cross site scripting (XSS) vulnerability in NeDi before 1.7Cp3 allows remote attackers to inject arbitrary web script or HTML via User-Chat.php.

The bug was discovered 10/24/2018. The weakness was released 01/17/2019 (Website). The advisory is shared at nedi.ch. This vulnerability is known as CVE-2018-20731 since 01/16/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 84 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:User-Chat.php it is possible to find vulnerable targets with Google Hacking. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13395 (NeDi Multiple Vulnerabilities).

Applying the patch 1.7Cp3 is able to eliminate this problem.

Entries connected to this vulnerability are available at VDB-129838, VDB-129839, VDB-129837 and VDB-129840. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
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

Name: Stored
Class: Cross site scripting / Stored
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 1.7Cp3

Timelineinfo

10/24/2018 🔍
01/16/2019 +84 days 🔍
01/16/2019 +0 days 🔍
01/17/2019 +1 days 🔍
01/17/2019 +0 days 🔍
05/02/2020 +471 days 🔍

Sourcesinfo

Advisory: nedi.ch
Status: Confirmed

CVE: CVE-2018-20731 (🔍)
GCVE (CVE): GCVE-0-2018-20731
GCVE (VulDB): GCVE-100-129841
See also: 🔍

Entryinfo

Created: 01/17/2019 15:01
Updated: 05/02/2020 10:43
Changes: 01/17/2019 15:01 (64), 05/02/2020 10:43 (1)
Complete: 🔍
Cache ID: 216::103

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

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