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CVE-2021-21434— XSS in Survey Module

Quick assessment

Affected
OTRS AG Survey
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.

OTRS AG Survey是德国OTRS公司的一款基于Perl语言的客户调查用具。该工具用于用于在车票关闭后向客户发送电子邮件。 OTRS AG Survey 中存在跨站脚本漏洞，该漏洞源于允许恶意代码可以在代理接口中执行。以下产品及版本受到影响：6.0。x、6.0.20和以前的版本、7.0。x版本、7.0.19和以前的版本。

CVSS 3.5 · Low EPSS 0.66% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-21434

Vulnerability Information
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Vulnerability Title
XSS in Survey Module
Source: CVE Program / CVE List V5
Vulnerability Description
Survey administrator can craft a survey in such way that malicious code can be executed in the agent interface (i.e. another agent who wants to make changes in the survey). This issue affects: OTRS AG Survey 6.0.x version 6.0.20 and prior versions; 7.0.x version 7.0.19 and prior versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/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
OTRS AG Survey 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OTRS AG Survey是德国OTRS公司的一款基于Perl语言的客户调查用具。该工具用于用于在车票关闭后向客户发送电子邮件。 OTRS AG Survey 中存在跨站脚本漏洞，该漏洞源于允许恶意代码可以在代理接口中执行。以下产品及版本受到影响：6.0。x、6.0.20和以前的版本、7.0。x版本、7.0.19和以前的版本。
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
OTRS AG Survey 6.0.x ~ 6.0.20 -

II. Public POCs for CVE-2021-21434

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III. Intelligence Information for CVE-2021-21434

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Other References for CVE-2021-21434 (1)

Same Patch Batch · OTRS AG · 2021-02-08 · 4 CVEs total

CVE-2021-21435 5.7 MEDIUM Information exposure in PDF export
CVE-2020-1779 4.3 MEDIUM Dynamic templates reveal sensitive data when OTRS tags are used
CVE-2021-21436 3.5 LOW Agent is able to link customer's Config Items without permission

IV. Related Vulnerabilities

Same product: Survey
Same vendor: OTRS AG
Same weakness: CWE-79

V. Comments for CVE-2021-21434

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