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CVE-2020-8020— Persistent XSS in markdown parser used by obs-server

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.

openSUSE是德国SUSE公司的一套基于Linux的自由操作系统与开源社区项目。 SUSE openSUSE open-build-service 7cc32c8e2ff7290698e101d9a80a9dc29a5500fb之前版本中存在跨站脚本漏洞。该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。

CVSS 6.5 · Medium EPSS 0.92% · P60

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2020-8020

Vulnerability Information
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Vulnerability Title
Persistent XSS in markdown parser used by obs-server
Source: CVE Program / CVE List V5
Vulnerability Description
A Improper Neutralization of Input During Web Page Generation vulnerability in open-build-service allows remote attackers to store arbitrary JS code to cause XSS. This issue affects: openSUSE open-build-service versions prior to 7cc32c8e2ff7290698e101d9a80a9dc29a5500fb.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
SUSE openSUSE 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
openSUSE是德国SUSE公司的一套基于Linux的自由操作系统与开源社区项目。 SUSE openSUSE open-build-service 7cc32c8e2ff7290698e101d9a80a9dc29a5500fb之前版本中存在跨站脚本漏洞。该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
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 ~ 7cc32c8e2ff7290698e101d9a80a9dc29a5500fb -

II. Public POCs for CVE-2020-8020

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III. Intelligence Information for CVE-2020-8020

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Mailing List Discussions for CVE-2020-8020 (1)

IV. Related Vulnerabilities

Same vendor: openSUSE
Same weakness: CWE-79

V. Comments for CVE-2020-8020

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