CVE-2021-23406— Remote Code Execution (RCE)
Quick assessment
Affected
n/a pac-resolver
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.
pac-resolver是一个从PAC 文件生成异步解析器函数。 pac-resolver 5.0.0之前版本存在安全漏洞，该漏洞源于应用不安全的 PAC 文件处理，当与不受信任的输入一起使用时可能会发生这种情况。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-23406
Vulnerability Information
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Vulnerability Title
Remote Code Execution (RCE)
Source: CVE Program / CVE List V5
Vulnerability Description
This affects the package pac-resolver before 5.0.0. This can occur when used with untrusted input, due to unsafe PAC file handling. **NOTE:** The fix for this vulnerability is applied in the node-degenerator library, a dependency written by the same maintainer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
pac-resolver 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pac-resolver是一个从PAC 文件生成异步解析器函数。 pac-resolver 5.0.0之前版本存在安全漏洞，该漏洞源于应用不安全的 PAC 文件处理，当与不受信任的输入一起使用时可能会发生这种情况。
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 |
|---|---|---|---|---|
| - | pac-resolver | unspecified ~ 5.0.0 | - |
|
II. Public POCs for CVE-2021-23406
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-23406 (2)
Vendor Advisories for CVE-2021-23406 (2)
-
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1568506 x_refsource_MISC
-
https://snyk.io/vuln/SNYK-JS-PACRESOLVER-1564857 x_refsource_MISC
Other References for CVE-2021-23406 (1)
-
https://github.com/TooTallNate/node-pac-resolver/releases/tag/5.0.0 x_refsource_MISC
Same Patch Batch · n/a · 2021-08-24 · 22 CVEs total
| CVE-2021-23430 | 7.5 HIGH | Directory Traversal |
| CVE-2021-23429 | 6.5 MEDIUM | Denial of Service (DoS) |
| CVE-2021-23431 | 5.4 MEDIUM | Cross-site Request Forgery (CSRF) |
| CVE-2021-23432 | 5.4 MEDIUM | Prototype Pollution |
| CVE-2020-18917 | DedeCMS跨站请求伪造漏洞 | |
| CVE-2021-36690 | Sqlite 缓冲区错误漏洞 | |
| CVE-2020-18913 | Envoy SQL注入漏洞 | |
| CVE-2021-39510 | D-Link DIR816 命令注入漏洞 | |
| CVE-2021-39509 | D-Link DIR-816 命令注入漏洞 | |
| CVE-2021-32263 | ok-file-formats 缓冲区错误漏洞 | |
| CVE-2021-38714 | sourceforge Plib输入验证错误漏洞 | |
| CVE-2021-37538 | PrestaShop SQL注入漏洞 | |
| CVE-2021-39375 | Philips Healthcare Tasy Electronic Medical Record SQL注入漏洞 | |
| CVE-2021-39376 | Philips Healthcare Tasy Electronic Medical RecordSQL注入漏洞 | |
| CVE-2021-38306 | LG N1T1 操作系统命令注入漏洞 | |
| CVE-2021-38556 | RaspAP 命令注入漏洞 | |
| CVE-2021-38557 | RaspAP安全漏洞 | |
| CVE-2021-36385 | Cerner Mobile Care SQL注入漏洞 | |
| CVE-2021-38613 | NASCENT RemKon Device Manager 代码问题漏洞 | |
| CVE-2021-38612 | NASCENT RemKon Device Manager 路径遍历漏洞 |
Showing top 20 of 22 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-23406
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