Improper Restriction of Rendered UI Layers or Frames Affecting firefox-esr package, versions <78.5.0esr-1~deb10u1
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Threat Intelligence
EPSS
0.1% (42nd
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN10-FIREFOXESR-1041091
- published 18 Nov 2020
- disclosed 9 Dec 2020
Introduced: 18 Nov 2020
CVE-2020-26953 Open this link in a new tabHow to fix?
Upgrade Debian:10
firefox-esr
to version 78.5.0esr-1~deb10u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox-esr
package and not the firefox-esr
package as distributed by Debian
.
See How to fix?
for Debian:10
relevant fixed versions and status.
It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.