CVE-2021-21186

2021-03-0900:00:00

ubuntu.com

insufficient policy enforcement

google chrome

qr scanning

ios

bypass navigation restrictions

crafted qr code

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS

0.003

Percentile

70.1%

JSON

Insufficient policy enforcement in QR scanning in Google Chrome on iOS
prior to 89.0.4389.72 allowed an attacker who convinced the user to scan a
QR code to bypass navigation restrictions via a crafted QR code.

Notes

Author	Note
alexmurray	The Debian chromium source package is called chromium-browser in Ubuntu
mdeslaur	starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchchromium-browser< 89.0.4389.82-0ubuntu0.18.04.1UNKNOWN
ubuntu16.04noarchchromium-browser< 89.0.4389.82-0ubuntu0.16.04.1UNKNOWN