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CVE Vulnerabilities

CVE-2023-6211

Improper Restriction of Rendered UI Layers or Frames

Published: Nov 21, 2023 | Modified: Nov 21, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-6211
CWEhttps://cwe.mitre.org/data/definitions/1021.html

If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game. This vulnerability affects Firefox < 120.

Weakness

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

Affected Software

NameVendorStart VersionEnd Version
FirefoxMozilla*120.0 (excluding)
FirefoxUbuntubionic*
FirefoxUbuntufocal*
FirefoxUbuntulunar*
FirefoxUbuntutrusty*
FirefoxUbuntuxenial*
Mozjs102Ubuntudevel*
Mozjs102Ubuntuesm-apps/noble*
Mozjs102Ubuntujammy*
Mozjs102Ubuntulunar*
Mozjs102Ubuntumantic*
Mozjs102Ubuntunoble*
Mozjs102Ubuntuupstream*
Mozjs38Ubuntubionic*
Mozjs38Ubuntuesm-apps/bionic*
Mozjs38Ubuntuupstream*
Mozjs52Ubuntubionic*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs52Ubuntufocal*
Mozjs52Ubuntuupstream*
Mozjs68Ubuntuesm-infra/focal*
Mozjs68Ubuntufocal*
Mozjs68Ubuntuupstream*
Mozjs78Ubuntuesm-apps/jammy*
Mozjs78Ubuntujammy*
Mozjs78Ubuntulunar*
Mozjs78Ubuntuupstream*
Mozjs91Ubuntujammy*
Mozjs91Ubuntuupstream*
ThunderbirdUbuntubionic*
ThunderbirdUbuntulunar*
ThunderbirdUbuntutrusty*
ThunderbirdUbuntuxenial*

Potential Mitigations

  • The use of X-Frame-Options allows developers of web content to restrict the usage of their application within the form of overlays, frames, or iFrames. The developer can indicate from which domains can frame the content.
  • The concept of X-Frame-Options is well documented, but implementation of this protection mechanism is in development to cover gaps. There is a need for allowing frames from multiple domains.
  • A developer can use a “frame-breaker” script in each page that should not be framed. This is very helpful for legacy browsers that do not support X-Frame-Options security feature previously mentioned.
  • It is also important to note that this tactic has been circumvented or bypassed. Improper usage of frames can persist in the web application through nested frames. The “frame-breaking” script does not intuitively account for multiple nested frames that can be presented to the user.

References

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