CVE-2021-22567

Bidirectional Override in Dart SDK

Severity Score

3.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

El texto Unicode bidireccional puede ser interpretado y compilado de forma diferente a como aparece en los editores, lo que puede ser explotado para conseguir que el código nefasto pase una revisión de código aparentando ser benigno. Un atacante podría insertar una fuente invisible para un revisor de código que modifique el comportamiento de un programa de forma no esperada.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-05 CVE Reserved
2022-01-05 CVE Published
2023-07-29 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-284: Improper Access Control

CAPEC

References (2)

URL	Tag	Source
https://github.com/dart-lang/sdk/blob/main/CHANGELOG.md	Release Notes

URL	Date	SRC

URL	Date	SRC
https://github.com/dart-lang/sdk/commit/52519ea8eb4780c468c4c2ed00e7c8046ccfed41	2022-01-12

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Dart Search vendor "Dart"		Dart Software Development Kit Search vendor "Dart" for product "Dart Software Development Kit"				< 2.15.0 Search vendor "Dart" for product "Dart Software Development Kit" and version " < 2.15.0"		-		Affected