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CVE-2022-3095— Incorrect parsing of the backslash characters in Dart library

Quick assessment

Affected
Google LLC Dart
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 2.18之前的版本和3.30之前的版本存在安全漏洞，该漏洞源于其Dart URI类使用RFC 3986语法，这导致了与uri中的“”字符的不兼容，这可能导致在解析uri的web应用程序中绕过认证。

CVSS 9.8 · Critical EPSS 0.93% · P59

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-3095

Vulnerability Information
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Vulnerability Title
Incorrect parsing of the backslash characters in Dart library
Source: CVE Program / CVE List V5
Vulnerability Description
The implementation of backslash parsing in the Dart URI class for versions prior to 2.18 and Flutter versions prior to 3.30 differs from the WhatWG URL standards. Dart uses the RFC 3986 syntax, which creates incompatibilities with the '\' characters in URIs, which can lead to auth bypass in webapps interpreting URIs. We recommend updating Dart or Flutter to mitigate the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
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 2.18之前的版本和3.30之前的版本存在安全漏洞，该漏洞源于其Dart URI类使用RFC 3986语法，这导致了与uri中的“”字符的不兼容，这可能导致在解析uri的web应用程序中绕过认证。
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 stable ~ 2.18.2 -

II. Public POCs for CVE-2022-3095

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III. Intelligence Information for CVE-2022-3095

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Other References for CVE-2022-3095 (1)

IV. Related Vulnerabilities

Same vendor: Google LLC
Same weakness: CWE-20

V. Comments for CVE-2022-3095

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