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CVE-2017-0883

Quick assessment

Affected
Nextcloud Nextcloud Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。Nextcloud Server是其中的一个服务器版。 Nextcloud Server 9.0.55之前的版本和10.0.2之前的版本中存在安全漏洞。攻击者可利用该漏洞编辑share中的文件。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.59% · P47

Possible ATT&CK Techniques 1 AI

T1485 · Data Destruction
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I. Basic Information for CVE-2017-0883

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
Permission Issues
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。Nextcloud Server是其中的一个服务器版。 Nextcloud Server 9.0.55之前的版本和10.0.2之前的版本中存在安全漏洞。攻击者可利用该漏洞编辑share中的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Nextcloud Nextcloud Server All versions before 9.0.55 and 10.0.2 -

II. Public POCs for CVE-2017-0883

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III. Intelligence Information for CVE-2017-0883

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Other References for CVE-2017-0883 (2)

Same Patch Batch · Nextcloud · 2017-04-05 · 6 CVEs total

CVE-2017-0884 Nextcloud Server 安全漏洞
CVE-2017-0885 Nextcloud Server 安全漏洞
CVE-2017-0886 Nextcloud Server 安全漏洞
CVE-2017-0887 Nextcloud Server 安全漏洞
CVE-2017-0888 Nextcloud Server 安全漏洞

IV. Related Vulnerabilities

Same product: Nextcloud Server
Same vendor: Nextcloud
Same weakness: CWE-275

V. Comments for CVE-2017-0883

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