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CVE-2021-40721— Adobe Connect Reflected Cross Site Scripting

Quick assessment

Affected
Adobe Connect
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.

Adobe Connect是美国奥多比（Adobe）公司的一个用于创建会议环境的软件。 Adobe Connect 存在跨站脚本漏洞，该漏洞源于产品未对用户提供的数据做有效处理。攻击者可通过该漏洞执行客户端代码。以下产品及版本受到影响：Adobe Connect 11.0, Adobe Connect 11.0.5 至 11.0.7 版本, Adobe Connect 11.2 至 11.2.2 版本。

CVSS 6.1 · Medium EPSS 1.01% · P62

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-40721

Vulnerability Information
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Vulnerability Title
Adobe Connect Reflected Cross Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
Adobe Connect version 11.2.3 (and earlier) is affected by a reflected Cross-Site Scripting (XSS) vulnerability. If an attacker is able to convince a victim to visit a URL referencing a vulnerable page, malicious JavaScript content may be executed within the context of the victim's browser.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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
Adobe Connect 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe Connect是美国奥多比（Adobe）公司的一个用于创建会议环境的软件。 Adobe Connect 存在跨站脚本漏洞，该漏洞源于产品未对用户提供的数据做有效处理。攻击者可通过该漏洞执行客户端代码。以下产品及版本受到影响：Adobe Connect 11.0, Adobe Connect 11.0.5 至 11.0.7 版本, Adobe Connect 11.2 至 11.2.2 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
Adobe Connect unspecified ~ 11.2.3 -

II. Public POCs for CVE-2021-40721

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III. Intelligence Information for CVE-2021-40721

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Vendor Advisories for CVE-2021-40721 (1)

Same Patch Batch · Adobe · 2021-10-15 · 8 CVEs total

CVE-2021-40720 9.8 CRITICAL Ops CLI Deserialization of Untrusted Data leads to Abritrary Code Execution
CVE-2021-40728 7.8 HIGH Adobe Acrobat Reader DC Use After Free Arbitrary Code Execution
CVE-2021-40724 7.8 HIGH Adobe Acrobat Reader Android Abritrary Code Execution Vulnerability
CVE-2021-39864 6.5 MEDIUM Adobe Commerce Cross-Site Request Forgery (CSRF) Could Lead To Unauthorized Cart Addition
CVE-2021-40729 3.3 LOW Adobe Acrobat Reader DC PDF Out-of-Bound Read Vulnerability Information Disclosure
CVE-2021-40731 Adobe Acrobat Reader DC JPEG2000 Parsing Out-Of-Bounds Write Remote Code Execution Vulnera
CVE-2021-40730 Adobe Acrobat Reader DC JPEG2000 Parsing Use-After-Free Information Disclosure Vulnerabili

IV. Related Vulnerabilities

Same product: Connect
Same vendor: Adobe
Same weakness: CWE-79

V. Comments for CVE-2021-40721

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