CVE-2020-8021— unauthorized read access to files where sourceaccess is disabled via a crafted _service file in Open Build Service
Quick assessment
Affected
openSUSE Open Build Service
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.
Open Build Service（OBS）是一套通用的、以自动、一致和可重复的方式从源代码构建和分发软件包的系统。 OBS 2.10.5之前版本中存在访问控制错误漏洞。远程攻击者可利用该漏洞访问未授权文件。
Possible ATT&CK Techniques 1 AI
T1083 · File and Directory Discovery
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I. Basic Information for CVE-2020-8021
Vulnerability Information
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Vulnerability Title
unauthorized read access to files where sourceaccess is disabled via a crafted _service file in Open Build Service
Source: CVE Program / CVE List V5
Vulnerability Description
a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Open Build Service 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open Build Service（OBS）是一套通用的、以自动、一致和可重复的方式从源代码构建和分发软件包的系统。 OBS 2.10.5之前版本中存在访问控制错误漏洞。远程攻击者可利用该漏洞访问未授权文件。
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 |
|---|---|---|---|---|
| openSUSE | Open Build Service | Open Build Service ~ 2.10.5 | - |
|
II. Public POCs for CVE-2020-8021
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2020-8021 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2020-8021
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