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CVE-2020-8173

Quick assessment

Affected
n/a 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 18.0.4 存在安全漏洞，该漏洞源于用于加密的随机字符集太少，使得解密时间比预期的要短。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.37% · P31

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2020-8173

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A too small set of random characters being used for encryption in Nextcloud Server 18.0.4 allowed decryption in shorter time than intended.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
加密问题
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 加密问题漏洞
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 18.0.4 存在安全漏洞，该漏洞源于用于加密的随机字符集太少，使得解密时间比预期的要短。
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 Server 18.0.4 -

II. Public POCs for CVE-2020-8173

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III. Intelligence Information for CVE-2020-8173

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Other References for CVE-2020-8173 (2)

Same Patch Batch · n/a · 2020-10-30 · 12 CVEs total

CVE-2020-7759 6.5 MEDIUM SQL Injection
CVE-2020-7760 5.3 MEDIUM Regular Expression Denial of Service (ReDoS)
CVE-2020-28031 Eramba 注入漏洞
CVE-2020-28030 Wireshark 资源管理错误漏洞
CVE-2020-8183 Nextcloud 安全漏洞
CVE-2020-8236 Nextcloud 授权问题漏洞
CVE-2020-7373 vBulletin 命令注入漏洞
CVE-2020-15914 Electronic Arts Inc Electronic Arts Origin Client 跨站脚本漏洞
CVE-2020-27708 Electronic Arts Inc Electronic Arts Origin Client 安全漏洞
CVE-2020-6014 Check Point Endpoint Security Client 代码问题漏洞
CVE-2020-28002 SonarSource SonarQube 授权问题漏洞

IV. Related Vulnerabilities

Same product: Nextcloud Server
Same vendor: n/a
Same weakness: CWE-310

V. Comments for CVE-2020-8173

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