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CVE-2021-42694

Quick assessment

Affected
n/a n/a
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.

Unicode（通用字符集）是美国统一码联盟（Unicode Consortium）组织的一种通用字符编码标准。用于为世界上每种语言的每个字符和符号分配一个代码。 Unicode Specification 14.0 版本及之前版本存在安全漏洞，该漏洞源于该规范允许攻击者使用在视觉上与目标标识符相同的同形文字生成源代码标识符，例如函数名称。 攻击者可以利用这一点，通过在下游软件中欺骗性地调用的上游软件依赖项中的对抗标识符定义来注入代码。

AI Predicted 5.3 Difficulty: Moderate EPSS 4.49% · P91
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I. Basic Information for CVE-2021-42694

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in the character definitions of the Unicode Specification through 14.0. The specification allows an adversary to produce source code identifiers such as function names using homoglyphs that render visually identical to a target identifier. Adversaries can leverage this to inject code via adversarial identifier definitions in upstream software dependencies invoked deceptively in downstream software. NOTE: the Unicode Consortium offers the following alternative approach to presenting this concern. An issue is noted in the nature of international text that can affect applications that implement support for The Unicode Standard (all versions). Unless mitigated, an adversary could produce source code identifiers using homoglyph characters that render visually identical to but are distinct from a target identifier. In this way, an adversary could inject adversarial identifier definitions in upstream software that are not detected by human reviewers and are invoked deceptively in downstream software. The Unicode Consortium has documented this class of security vulnerability in its document, Unicode Technical Report #36, Unicode Security Considerations. The Unicode Consortium also provides guidance on mitigations for this class of issues in Unicode Technical Standard #39, Unicode Security Mechanisms.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Unicode 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Unicode（通用字符集）是美国统一码联盟（Unicode Consortium）组织的一种通用字符编码标准。用于为世界上每种语言的每个字符和符号分配一个代码。 Unicode Specification 14.0 版本及之前版本存在安全漏洞，该漏洞源于该规范允许攻击者使用在视觉上与目标标识符相同的同形文字生成源代码标识符，例如函数名称。 攻击者可以利用这一点，通过在下游软件中欺骗性地调用的上游软件依赖项中的对抗标识符定义来注入代码。
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
- n/a n/a -

II. Public POCs for CVE-2021-42694

# POC Description Source Link Shenlong Link
1 Generate malicious files using recently published homoglyphic-attack (CVE-2021-42694) https://github.com/simplylu/CVE-2021-42694 POC Details
2 None https://github.com/k271266/CVE-2021-42694 POC Details
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III. Intelligence Information for CVE-2021-42694

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Vendor Advisories for CVE-2021-42694 (2)

Mailing List Discussions for CVE-2021-42694 (2)

Other References for CVE-2021-42694 (6)

Same Patch Batch · n/a · 2021-11-01 · 23 CVEs total

CVE-2021-3704 Hp LaserJet Pro Printer 资源管理错误漏洞
CVE-2021-43058 Replicated 输入验证错误漏洞
CVE-2021-20136 ZOHO ManageEngine Log360 访问控制错误漏洞
CVE-2021-26740 Millken DoyoCms 代码问题漏洞
CVE-2021-26739 Millken DoyoCms SQL注入漏洞
CVE-2021-38847 S-cart 代码问题漏洞
CVE-2020-28702 PybbsCms SQL注入漏洞
CVE-2021-3705 HP LaserJet Pro printer 安全漏洞
CVE-2021-29212 HPE IlO Amplifier Pack 路径遍历漏洞
CVE-2021-29213 HPE ProLiant 安全漏洞
CVE-2021-27005 Netapp Clustered Data ONTAP 资源管理错误漏洞
CVE-2021-42574 Unicode 代码注入漏洞
CVE-2021-3440 HP Print and Scan Doctor 安全漏洞
CVE-2021-27004 Clustered Data ONTAP 安全漏洞
CVE-2021-25878 AVideo 和 YouPHPTube 跨站脚本漏洞
CVE-2021-25877 YouPHPTube 代码注入漏洞
CVE-2021-25876 AVideo 和 YouPHPTube 跨站脚本漏洞
CVE-2021-25875 AVideo 和 YouPHPTube 跨站脚本漏洞
CVE-2021-25874 YouPHPTube SQL注入漏洞
CVE-2021-42557 Jeedom 安全漏洞

Showing top 20 of 23 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-42694

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