CVE-2021-21087— ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser
Quick assessment
Affected
Adobe ColdFusion
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Adobe ColdFusion是美国奥多比（Adobe）公司的一套快速应用程序开发平台。该平台包括集成开发环境和脚本语言。 ColdFusion 2018 存在跨站脚本漏洞，攻击者可利用该漏洞导致任意代码执行。
Public Exploits 1
Nuclei · 1
CVE-2021-21087.yaml [template]
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-21087
Vulnerability Information
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Vulnerability Title
ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser
Source: CVE Program / CVE List V5
Vulnerability Description
Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 ColdFusion 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe ColdFusion是美国奥多比（Adobe）公司的一套快速应用程序开发平台。该平台包括集成开发环境和脚本语言。 ColdFusion 2018 存在跨站脚本漏洞，攻击者可利用该漏洞导致任意代码执行。
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)
Shenlong Deep Dive — AI Deep Analysis
10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Adobe | ColdFusion | unspecified ~ 2016.16 | - |
|
II. Public POCs for CVE-2021-21087
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21087.yaml | POC Details |
| 2 | None | https://github.com/Threekiii/Awesome-POC/blob/master/Web%E5%BA%94%E7%94%A8%E6%BC%8F%E6%B4%9E/Adobe%20ColdFusion%20%E8%BF%9C%E7%A8%8B%E4%BB%A3%E7%A0%81%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E%20CVE-2021-21087.md | POC Details |
AI-Generated POC
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Vendor Advisories for CVE-2021-21087 (1)
-
https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html x_refsource_MISC
Same Patch Batch · Adobe · 2021-04-15 · 10 CVEs total
| CVE-2021-21100 | 7.8 HIGH | Adobe Digital Editions Arbitrary file system write vulnerability |
| CVE-2021-21094 | Adobe Bridge PDF File Parsing Out-Of-Bounds Write vulnerability could lead to arbitrary co | |
| CVE-2021-21096 | Adobe Bridge Genuine Software Service Incorrect Permission Assignment could lead to Denial | |
| CVE-2021-21093 | Adobe Bridge SGI File Parsing Memory Corruption vulnerability could lead to arbitrary code | |
| CVE-2021-21095 | Adobe Bridge TTF Font Parsing Out-Of-Bounds Write vulnerability could lead to arbitrary co | |
| CVE-2021-28549 | Adobe Photoshop parsing JS buffer overflow vulnerability could lead to arbitrary code exec | |
| CVE-2021-21091 | Adobe Bridge HEIC File Parsing Out-Of-Bounds Read vulnerability could lead to information | |
| CVE-2021-21092 | Adobe Bridge DCM File Parsing Memory Corruption could lead to arbitrary code execution | |
| CVE-2021-28548 | Adobe Photoshop parsing JS buffer overflow vulnerability could lead to arbitrary code exec |
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V. Comments for CVE-2021-21087
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