Nextcloud Server up to 9.0.57/10.0.4/11.0.2 Javascript Library 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-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Nextcloud Server up to 9.0.57/10.0.4/11.0.2. Affected is an unknown function of the component Javascript Library. Performing a manipulation results in cross site scripting. This vulnerability is known as CVE-2017-0893. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Nextcloud Server up to 9.0.57/10.0.4/11.0.2 (Cloud Software). This affects some unknown functionality of the component Javascript Library. The manipulation 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. The summary by CVE is:

Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are shipping a vulnerable JavaScript library for sanitizing untrusted user-input which suffered from a XSS vulnerability caused by a behaviour change in Safari 10.1 and 10.2. Note that Nextcloud employs a strict Content-Security-Policy preventing exploitation of this XSS issue on modern web browsers.

The bug was discovered 05/08/2017. The weakness was published 05/08/2017 (Website). It is possible to read the advisory at nextcloud.com. This vulnerability is uniquely identified as CVE-2017-0893 since 11/30/2016. It is possible to initiate the attack remotely. A authentication is required for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

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

Similar entries are available at VDB-100937, VDB-100936, VDB-100934 and VDB-100933. Be aware that VulDB is the high quality source for vulnerability data.

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 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-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: 🔍

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-2017-0893 (🔍)
GCVE (CVE): GCVE-0-2017-0893
GCVE (VulDB): GCVE-100-100935
OSVDB: - CVE-2017-0893 - Nextcloud - Nextcloud Server - Low

See also: 🔍

Entryinfo

Created: 05/09/2017 08:33
Updated: 09/24/2020 16:10
Changes: 05/09/2017 08:33 (63), 09/24/2020 16:10 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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