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CVE-2021-22567— Bidirectional Override in Dart SDK

Quick assessment

Affected
Google LLC Dart SDK
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.

Dart是一款开源的编程语言。 Dart SDK存在安全漏洞，该漏洞源于双向Unicode文本的解释和编译方式与它在编辑器中的表现不同，恶意代码可以利用这种方式让其通过编辑器代码检查，而看起来是良性的。攻击者可利用该漏洞可以嵌入对代码审查者不可见的源代码，以意想不到的方式修改程序的行为。

CVSS 4.6 · Medium EPSS 0.60% · P46

Possible ATT&CK Techniques 1 AI

T1653 · Power Settings
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I. Basic Information for CVE-2021-22567

Vulnerability Information
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Vulnerability Title
Bidirectional Override in Dart SDK
Source: CVE Program / CVE List V5
Vulnerability Description
Bidirectional Unicode text can be interpreted and compiled differently than how it appears in editors which can be exploited to get nefarious code passed a code review by appearing benign. An attacker could embed a source that is invisible to a code reviewer that modifies the behavior of a program in unexpected ways.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Dart 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dart是一款开源的编程语言。 Dart SDK存在安全漏洞，该漏洞源于双向Unicode文本的解释和编译方式与它在编辑器中的表现不同，恶意代码可以利用这种方式让其通过编辑器代码检查，而看起来是良性的。攻击者可利用该漏洞可以嵌入对代码审查者不可见的源代码，以意想不到的方式修改程序的行为。
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
Google LLC Dart SDK unspecified ~ 2.15.0-268.18.beta -

II. Public POCs for CVE-2021-22567

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III. Intelligence Information for CVE-2021-22567

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Other References for CVE-2021-22567 (1)

IV. Related Vulnerabilities

Same product: Dart SDK
Same vendor: Google LLC
Same weakness: CWE-284

V. Comments for CVE-2021-22567

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