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CVE-2021-27910— Stored XSS vulnerability on Bounce Management Callback

Quick assessment

Affected
Mautic Mautic
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.

Mautic是一款开源的营销自动化软件。该软件能够监控管理网站、发送电子邮件并管理客户资源。 Mautic 存在跨站脚本漏洞，该漏洞源于不充分的过滤允许。利用该漏洞可以在 Mautic 中进行任意 JavaScript 注入。

CVSS 8.2 · High EPSS 0.70% · P50
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I. Basic Information for CVE-2021-27910

Vulnerability Information
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Vulnerability Title
Stored XSS vulnerability on Bounce Management Callback
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient sanitization / filtering allows for arbitrary JavaScript Injection in Mautic using the bounce management callback function. The values submitted in the "error" and "error_related_to" parameters of the POST request of the bounce management callback will be permanently stored and executed once the details page of an affected lead is opened by a Mautic user. An attacker with access to the bounce management callback function (identified with the Mailjet webhook, but it is assumed this will work uniformly across all kinds of webhooks) can inject arbitrary JavaScript Code into the "error" and "error_related_to" parameters of the POST request (POST /mailer/<product / webhook>/callback). It is noted that there is no authentication needed to access this function. The JavaScript Code is stored permanently in the web application and executed every time an authenticated user views the details page of a single contact / lead in Mautic. This means, arbitrary code can be executed to, e.g., steal or tamper with information.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/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
Mautic 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mautic是一款开源的营销自动化软件。该软件能够监控管理网站、发送电子邮件并管理客户资源。 Mautic 存在跨站脚本漏洞，该漏洞源于不充分的过滤允许。利用该漏洞可以在 Mautic 中进行任意 JavaScript 注入。
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
Mautic Mautic unspecified ~ 3.3.4 -

II. Public POCs for CVE-2021-27910

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III. Intelligence Information for CVE-2021-27910

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Vendor Advisories for CVE-2021-27910 (1)

Same Patch Batch · Mautic · 2021-08-30 · 5 CVEs total

CVE-2021-27911 8.3 HIGH XSS vulnerability on contacts view
CVE-2021-27912 7.1 HIGH XSS vulnerability on asset view
CVE-2021-27909 6.3 MEDIUM XSS vulnerability on password reset page
CVE-2021-27913 3.5 LOW Use of a Broken or Risky Cryptographic Algorithm

IV. Related Vulnerabilities

Same product: Mautic
Same vendor: Mautic
Same weakness: CWE-79

V. Comments for CVE-2021-27910

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