CVE-2021-21111 - Improper Restriction of Rendered UI Layers or Frames

Severity

96%

Complexity

27%

Confidentiality

100%

Insufficient policy enforcement in WebUI in Google Chrome prior to 87.0.4280.141 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

CVSS 3.1 Base Score 9.6. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).

CVSS 2.0 Base Score 6.8. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P).

Overview

First reported 4 years ago

2021-01-08 19:15:00

Last updated 4 years ago

2021-01-28 22:22:00

Affected Software

Fedora 32

32

References

https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop.html

https://crbug.com/1149125

GLSA-202101-05

https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop.html

Release Notes, Vendor Advisory

https://crbug.com/1149125

Permissions Required, Vendor Advisory

GLSA-202101-05

Third Party Advisory

FEDORA-2021-79926272ce

DSA-4832

FEDORA-2021-d9faeff8eb

FEDORA-2021-79926272ce

Mailing List, Third Party Advisory

FEDORA-2021-d9faeff8eb

Mailing List, Third Party Advisory

DSA-4832

Third Party Advisory

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