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-$5k	0.00

A vulnerability was found in Nextcloud Server up to 9.0.57/10.0.4/11.0.2 (Cloud Software). It has been declared as problematic. Affected by this vulnerability is an unknown function of the component Error Message Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. 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:

Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are vulnerable to an inadequate escaping of error messages leading to XSS vulnerabilities in multiple components.

The bug was discovered 05/08/2017. The weakness was presented 05/08/2017 (Website). The advisory is shared at nextcloud.com. This vulnerability is known as CVE-2017-0891 since 11/30/2016. The attack can be launched remotely. The successful exploitation requires a single authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 9.0.58, 10.0.5 or 11.0.3 eliminates this vulnerability.

See 100937, 100936, 100935 and 100934 for similar entries.

Productinfo

Type

• Cloud Software

Vendor

• Nextcloud

Name

• Server

Version

• 9.0.0
• 9.0.1
• 9.0.2
• 9.0.3
• 9.0.4
• 9.0.5
• 9.0.6
• 9.0.7
• 9.0.8
• 9.0.9
• 9.0.10
• 9.0.11
• 9.0.12
• 9.0.13
• 9.0.14
• 9.0.15
• 9.0.16
• 9.0.17
• 9.0.18
• 9.0.19
• 9.0.20
• 9.0.21
• 9.0.22
• 9.0.23
• 9.0.24
• 9.0.25
• 9.0.26
• 9.0.27
• 9.0.28
• 9.0.29
• 9.0.30
• 9.0.31
• 9.0.32
• 9.0.33
• 9.0.34
• 9.0.35
• 9.0.36
• 9.0.37
• 9.0.38
• 9.0.39
• 9.0.40
• 9.0.41
• 9.0.42
• 9.0.43
• 9.0.44
• 9.0.45
• 9.0.46
• 9.0.47
• 9.0.48
• 9.0.49
• 9.0.50
• 9.0.51
• 9.0.52
• 9.0.53
• 9.0.54
• 9.0.55
• 9.0.56
• 9.0.57
• 10.0.0
• 10.0.1
• 10.0.2
• 10.0.3
• 10.0.4
• 11.0.0
• 11.0.1
• 11.0.2

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

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

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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-74 / CWE-707
ATT&CK: T1059.007

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

OpenVAS ID: 801810
OpenVAS Name: nextCloud Multiple XSS Vulnerabilities (Linux)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Server 9.0.58/10.0.5/11.0.3

Timelineinfo

11/30/2016 🔍
05/08/2017 +159 days 🔍
05/08/2017 +0 days 🔍
05/08/2017 +0 days 🔍
05/09/2017 +1 days 🔍
09/24/2020 +1234 days 🔍

Sourcesinfo

Advisory: nextcloud.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-0891 (🔍)
OSVDB: - CVE-2017-0891 - Nextcloud - Nextcloud Server - Low

See also: 🔍

Entryinfo

Created: 05/09/2017 08:32
Updated: 09/24/2020 16:02
Changes: 05/09/2017 08:32 (63), 09/24/2020 16:02 (3)
Complete: 🔍

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