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.
4.7	$0-$5k	0.00

A vulnerability was found in Nextcloud Server up to 9.0.54/10.0.1 (Cloud Software). It has been rated as critical. Affected by this issue is an unknown code block of the component Shared Folder. The manipulation with an unknown input leads to a permission vulnerability. Using CWE to declare the problem leads to CWE-275. Impacted is integrity, and availability. CVE summarizes:

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a creation of folders in read-only folders despite lacking permissions issue. Due to a logical error in the file caching layer an authenticated adversary is able to create empty folders inside a shared folder. Note that this only affects folders and files that the adversary has at least read-only permissions for.

The bug was discovered 04/05/2017. The weakness was shared 04/05/2017 (Website). The advisory is available at nextcloud.com. This vulnerability is handled as CVE-2017-0884 since 11/30/2016. The attack may be launched remotely. The requirement for exploitation is a simple authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1222 by the MITRE ATT&CK project.

Upgrading to version 9.0.55 or 10.0.2 eliminates this vulnerability.

The entries 99318, 99315, 99316 and 99317 are related to this item.

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
• 10.0.0
• 10.0.1

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: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
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: Permission
CWE: CWE-275 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

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 Server CVE-2017-0888 Content Spoofing Vulnerability (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Server 9.0.55/10.0.2

Timelineinfo

11/30/2016 🔍
04/05/2017 +126 days 🔍
04/05/2017 +0 days 🔍
04/05/2017 +0 days 🔍
04/06/2017 +1 days 🔍
08/25/2020 +1237 days 🔍

Sourcesinfo

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

CVE: CVE-2017-0884 (🔍)
OSVDB: - CVE-2017-0884 - Nextcloud Server - Privilege Escalation Issue

See also: 🔍

Entryinfo

Created: 04/06/2017 09:22
Updated: 08/25/2020 22:22
Changes: 04/06/2017 09:22 (63), 08/25/2020 22:22 (3)
Complete: 🔍

Discussion

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